用javascript做一个计算器？？

http://www.kings2.net/code/time/time09.htm

解决方案 »

  1.   

    <html>
    <head>
    <meta http-equiv="Content-Type" content="text/html; charset=gb2312">
    <SCRIPT>
    <!--
     parent.moveTo((screen.width-540)/2,(screen.height-335)/2);
     parent.resizeTo(540,335);
    //-->
    </SCRIPT>
    <title>科学计算器</title>
    <style>
    <!--
    BODY {
    font-family: "宋体", "Arial", "Times New Roman";
    font-size: 9pt;
    background-color: #d4d4d4;
    color: #0001fC;
    background-attachment: fixed;
    }
    td{font-family: "宋体", "Arial Narrow", "Times New Roman"; font-size:9pt; font-color:#000000}
    //-->
    </style>
    <script language="javascript">
    <!--
    var endNumber=true
    var mem=0
    var carry=10
    var hexnum="0123456789abcdef"
    var angle="d"
    var stack=""
    var level="0"
    var layer=0
    //数字键function inputkey(key)
    {
    var index=key.charCodeAt(0);
    if ((carry==2 && (index==48 || index==49))
    || (carry==8 && index>=48 && index<=55)
    || (carry==10 && (index>=48 && index<=57 || index==46))
    || (carry==16 && ((index>=48 && index<=57) || (index>=97 && index<=102))))
    if(endNumber)
    {
    endNumber=false
    document.calc.display.value = key
    }
    else if(document.calc.display.value == null || document.calc.display.value == "0")
    document.calc.display.value = key
    else
    document.calc.display.value += key
    }function changeSign()
    {
    if (document.calc.display.value!="0")
    if(document.calc.display.value.substr(0,1) == "-")
    document.calc.display.value = document.calc.display.value.substr(1)
    else
    document.calc.display.value = "-" + document.calc.display.value
    }//函数键function inputfunction(fun,shiftfun)
    {
    endNumber=true
    if (document.calc.shiftf.checked)
    document.calc.display.value=decto(funcalc(shiftfun,(todec(document.calc.display.value,carry))),carry)
    else
    document.calc.display.value=decto(funcalc(fun,(todec(document.calc.display.value,carry))),carry)
    document.calc.shiftf.checked=false
    document.calc.hypf.checked=false
    inputshift()
    }function inputtrig(trig,arctrig,hyp,archyp)
    {
    if (document.calc.hypf.checked)
    inputfunction(hyp,archyp)
    else
    inputfunction(trig,arctrig)
    }
    //运算符function operation(join,newlevel)
    {
    endNumber=true
    var temp=stack.substr(stack.lastIndexOf("(")+1)+document.calc.display.value
    while (newlevel!=0 && (newlevel<=(level.charAt(level.length-1))))
    {
    temp=parse(temp)
    level=level.slice(0,-1)
    }
    if (temp.match(/^(.*\d[\+\-\*\/\%\^\&\|x])?([+-]?[0-9a-f\.]+)$/))
    document.calc.display.value=RegExp.$2
    stack=stack.substr(0,stack.lastIndexOf("(")+1)+temp+join
    document.calc.operator.value=" "+join+" "
    level=level+newlevel}//括号function addbracket()
    {
    endNumber=true
    document.calc.display.value=0
    stack=stack+"("
    document.calc.operator.value="   "
    level=level+0layer+=1
    document.calc.bracket.value="(="+layer
    }function disbracket()
    {
    endNumber=true
    var temp=stack.substr(stack.lastIndexOf("(")+1)+document.calc.display.value
    while ((level.charAt(level.length-1))>0)
    {
    temp=parse(temp)
    level=level.slice(0,-1)
    }document.calc.display.value=temp
    stack=stack.substr(0,stack.lastIndexOf("("))
    document.calc.operator.value="   "
    level=level.slice(0,-1)layer-=1
    if (layer>0)
    document.calc.bracket.value="(="+layer
    else
    document.calc.bracket.value=""
    }//等号function result()
    {
    endNumber=true
    while (layer>0)
    disbracket()
    var temp=stack+document.calc.display.value
    while ((level.charAt(level.length-1))>0)
    {
    temp=parse(temp)
    level=level.slice(0,-1)
    }document.calc.display.value=temp
    document.calc.bracket.value=""
    document.calc.operator.value=""
    stack=""
    level="0"
    }
    //修改键function backspace()
    {
    if (!endNumber)
    {
    if(document.calc.display.value.length>1)
    document.calc.display.value=document.calc.display.value.substring(0,document.calc.display.value.length - 1)
    else
    document.calc.display.value=0
    }
    }function clearall()
    {
    document.calc.display.value=0
    endNumber=true
    stack=""
    level="0"
    layer=""
    document.calc.operator.value=""
    document.calc.bracket.value=""
    }
    //转换键function inputChangCarry(newcarry)
    {
    endNumber=true
    document.calc.display.value=(decto(todec(document.calc.display.value,carry),newcarry))
    carry=newcarrydocument.calc.sin.disabled=(carry!=10)
    document.calc.cos.disabled=(carry!=10)
    document.calc.tan.disabled=(carry!=10)
    document.calc.bt.disabled=(carry!=10)
    document.calc.pi.disabled=(carry!=10)
    document.calc.e.disabled=(carry!=10)
    document.calc.kp.disabled=(carry!=10)
      

  2.   

    document.calc.k2.disabled=(carry<=2)
    document.calc.k3.disabled=(carry<=2)
    document.calc.k4.disabled=(carry<=2)
    document.calc.k5.disabled=(carry<=2)
    document.calc.k6.disabled=(carry<=2)
    document.calc.k7.disabled=(carry<=2)
    document.calc.k8.disabled=(carry<=8)
    document.calc.k9.disabled=(carry<=8)
    document.calc.ka.disabled=(carry<=10)
    document.calc.kb.disabled=(carry<=10)
    document.calc.kc.disabled=(carry<=10)
    document.calc.kd.disabled=(carry<=10)
    document.calc.ke.disabled=(carry<=10)
    document.calc.kf.disabled=(carry<=10)}function inputChangAngle(angletype)
    {
    endNumber=true
    angle=angletype
    if (angle=="d")
    document.calc.display.value=radiansToDegress(document.calc.display.value)
    else
    document.calc.display.value=degressToRadians(document.calc.display.value)
    endNumber=true
    }function inputshift()
    {
    if (document.calc.shiftf.checked)
    {
    document.calc.bt.value="deg "
    document.calc.ln.value="exp "
    document.calc.log.value="expd"if (document.calc.hypf.checked)
    {
    document.calc.sin.value="ahs "
    document.calc.cos.value="ahc "
    document.calc.tan.value="aht "
    }
    else
    {
    document.calc.sin.value="asin"
    document.calc.cos.value="acos"
    document.calc.tan.value="atan"
    }document.calc.sqr.value="x^.5"
    document.calc.cube.value="x^.3"document.calc.floor.value="小数"
    }
    else
    {
    document.calc.bt.value="d.ms"
    document.calc.ln.value=" ln "
    document.calc.log.value="log "if (document.calc.hypf.checked)
    {
    document.calc.sin.value="hsin"
    document.calc.cos.value="hcos"
    document.calc.tan.value="htan"
    }
    else
    {
    document.calc.sin.value="sin "
    document.calc.cos.value="cos "
    document.calc.tan.value="tan "
    }document.calc.sqr.value="x^2 "
    document.calc.cube.value="x^3 "document.calc.floor.value="取整"
    }}
    //存储器部分function clearmemory()
    {
    mem=0
    document.calc.memory.value="   "
    }function getmemory()
    {
    endNumber=true
    document.calc.display.value=decto(mem,carry)
    }function putmemory()
    {
    endNumber=true
    if (document.calc.display.value!=0)
    {
    mem=todec(document.calc.display.value,carry)
    document.calc.memory.value=" M "
    }
    else
    document.calc.memory.value="   "
    }function addmemory()
    {
    endNumber=true
    mem=parseFloat(mem)+parseFloat(todec(document.calc.display.value,carry))
    if (mem==0)
    document.calc.memory.value="   "
    else
    document.calc.memory.value=" M "
    }function multimemory()
    {
    endNumber=true
    mem=parseFloat(mem)*parseFloat(todec(document.calc.display.value,carry))
    if (mem==0)
    document.calc.memory.value="   "
    else
    document.calc.memory.value=" M "
    }//十进制转换function todec(num,oldcarry)
    {
    if (oldcarry==10 || num==0) return(num)
    var neg=(num.charAt(0)=="-")
    if (neg) num=num.substr(1)
    var newnum=0
    for (var index=1;index<=num.length;index++)
    newnum=newnum*oldcarry+hexnum.indexOf(num.charAt(index-1))
    if (neg)
    newnum=-newnum
    return(newnum)
    }function decto(num,newcarry)
    {
    var neg=(num<0)
    if (newcarry==10 || num==0) return(num)
    num=""+Math.abs(num)
    var newnum=""
    while (num!=0)
    {
    newnum=hexnum.charAt(num%newcarry)+newnum
    num=Math.floor(num/newcarry)
    }
    if (neg)
    newnum="-"+newnum
    return(newnum)
    }//表达式解析function parse(string)
    {
    if (string.match(/^(.*\d[\+\-\*\/\%\^\&\|x\<])?([+-]?[0-9a-f\.]+)([\+\-\*\/\%\^\&\|x\<])([+-]?[0-9a-f\.]+)$/))
    return(RegExp.$1+cypher(RegExp.$2,RegExp.$3,RegExp.$4))
    else
    return(string)
    }//数学运算和位运算function cypher(left,join,right)
    {
    left=todec(left,carry)
    right=todec(right,carry)
    if (join=="+")
    return(decto(parseFloat(left)+parseFloat(right),carry))
    if (join=="-")
    return(decto(left-right,carry))
    if (join=="*")
    return(decto(left*right,carry))
    if (join=="/" && right!=0)
    return(decto(left/right,carry))
    if (join=="%")
    return(decto(left%right,carry))
    if (join=="&")
    return(decto(left&right,carry))
    if (join=="|")
    return(decto(left|right,carry))
    if (join=="^")
    return(decto(Math.pow(left,right),carry))
    if (join=="x")
    return(decto(left^right,carry))
    if (join=="<")
    return(decto(left<<right,carry))
    alert("除数不能为零")
    return(left)
    }
      

  3.   


    //函数计算function funcalc(fun,num)
    {
    with(Math)
    {
    if (fun=="pi")
    return(PI)
    if (fun=="e")
    return(E)if (fun=="abs")
    return(abs(num))
    if (fun=="ceil")
    return(ceil(num))
    if (fun=="round")
    return(round(num))if (fun=="floor")
    return(floor(num))
    if (fun=="deci")
    return(num-floor(num))
    if (fun=="ln" && num>0)
    return(log(num))
    if (fun=="exp")
    return(exp(num))
    if (fun=="log" && num>0)
    return(log(num)*LOG10E)
    if (fun=="expdec")
    return(pow(10,num))
    if (fun=="cube")
    return(num*num*num)
    if (fun=="cubt")
    return(pow(num,1/3))
    if (fun=="sqr")
    return(num*num)
    if (fun=="sqrt" && num>=0)
    return(sqrt(num))if (fun=="!")
    return(factorial(num))if (fun=="recip" && num!=0)
    return(1/num)if (fun=="dms")
    return(dms(num))
    if (fun=="deg")
    return(deg(num))if (fun=="~")
    return(~num)if (angle=="d")
    {
    if (fun=="sin")
    return(sin(degressToRadians(num)))
    if (fun=="cos")
    return(cos(degressToRadians(num)))
    if (fun=="tan")
    return(tan(degressToRadians(num)))if (fun=="arcsin" && abs(num)<=1)
    return(radiansToDegress(asin(num)))
    if (fun=="arccos" && abs(num)<=1)
    return(radiansToDegress(acos(num)))
    if (fun=="arctan")
    return(radiansToDegress(atan(num)))
    }
    else
    {
    if (fun=="sin")
    return(sin(num))
    if (fun=="cos")
    return(cos(num))
    if (fun=="tan")
    return(tan(num))if (fun=="arcsin" && abs(num)<=1)
    return(asin(num))
    if (fun=="arccos" && abs(num)<=1)
    return(acos(num))
    if (fun=="arctan")
    return(atan(num))
    }if (fun=="hypsin")
    return((exp(num)-exp(0-num))*0.5)
    if (fun=="hypcos")
    return((exp(num)+exp(-num))*0.5)
    if (fun=="hyptan")
    return((exp(num)-exp(-num))/(exp(num)+exp(-num)))if (fun=="ahypsin" | fun=="hypcos" | fun=="hyptan")
    {
    alert("对不起,公式还没有查到!")
    return(num)
    }alert("超出函数定义范围")
    return(num)
    }
    }
      

  4.   

    <html>
    <head>
    <meta http-equiv="Content-Type" content="text/html; charset=gb2312">
    <title>科学计算器</title>
    <SCRIPT LANGUAGE="JavaScript" src="menu.js"></script><style>
    <!--
    BODY { 
    font-family: "宋体", "Arial", "Times New Roman"; 
    font-size: 9pt;
    background-color: #edf0e1;
    color: #0001fC;
    background-attachment: fixed;
    }
    td{font-family: "宋体", "Arial Narrow", "Times New Roman"; font-size:9pt; font-color:#000000}
    //-->
    </style>
    <script language="javascript">
    <!--
    var endNumber=true
    var mem=0
    var carry=10
    var hexnum="0123456789abcdef"
    var angle="d"
    var stack=""
    var level="0"
    var layer=0
    //数字键function inputkey(key)
    {
    var index=key.charCodeAt(0);
    if ((carry==2 && (index==48 || index==49))
     || (carry==8 && index>=48 && index<=55)
     || (carry==10 && (index>=48 && index<=57 || index==46))
     || (carry==16 && ((index>=48 && index<=57) || (index>=97 && index<=102))))
    if(endNumber)
    {
    endNumber=false
    document.calc.display.value = key
    }
    else if(document.calc.display.value == null || document.calc.display.value == "0")
    document.calc.display.value = key
    else
    document.calc.display.value += key
    }function changeSign()
    {
        if (document.calc.display.value!="0")
         if(document.calc.display.value.substr(0,1) == "-")
             document.calc.display.value = document.calc.display.value.substr(1)
         else
             document.calc.display.value = "-" + document.calc.display.value
    }//函数键function inputfunction(fun,shiftfun)
    {
    endNumber=true
    if (document.calc.shiftf.checked)
    document.calc.display.value=decto(funcalc(shiftfun,(todec(document.calc.display.value,carry))),carry)
    else
    document.calc.display.value=decto(funcalc(fun,(todec(document.calc.display.value,carry))),carry)
    document.calc.shiftf.checked=false
    document.calc.hypf.checked=false
    inputshift()
    }function inputtrig(trig,arctrig,hyp,archyp)
    {
    if (document.calc.hypf.checked)
    inputfunction(hyp,archyp)
    else
    inputfunction(trig,arctrig)
    }
    //运算符function operation(join,newlevel)
    {
    endNumber=true
    var temp=stack.substr(stack.lastIndexOf("(")+1)+document.calc.display.value
    while (newlevel!=0 && (newlevel<=(level.charAt(level.length-1))))
    {
    temp=parse(temp)
    level=level.slice(0,-1)
    }
    if (temp.match(/^(.*\d[\+\-\*\/\%\^\&\|x])?([+-]?[0-9a-f\.]+)$/))
    document.calc.display.value=RegExp.$2
    stack=stack.substr(0,stack.lastIndexOf("(")+1)+temp+join
    document.calc.operator.value=" "+join+" "
    level=level+newlevel

    }//括号function addbracket()
    {
    endNumber=true
    document.calc.display.value=0
    stack=stack+"("
    document.calc.operator.value="   "
    level=level+0

    layer+=1
    document.calc.bracket.value="(="+layer
    }function disbracket()
    {
    endNumber=true
    var temp=stack.substr(stack.lastIndexOf("(")+1)+document.calc.display.value
    while ((level.charAt(level.length-1))>0)
    {
    temp=parse(temp)
    level=level.slice(0,-1)
    }

    document.calc.display.value=temp
    stack=stack.substr(0,stack.lastIndexOf("("))
    document.calc.operator.value="   "
    level=level.slice(0,-1) layer-=1
    if (layer>0)
    document.calc.bracket.value="(="+layer
    else
    document.calc.bracket.value=""
    }
      

  5.   

    function factorial(n)
    {
    n=Math.abs(parseInt(n))
    var fac=1
    for (;n>0;n-=1)
    fac*=n
    return(fac)
    }function dms(n)
    {
    var neg=(n<0)
    with(Math)
    {
    n=abs(n)
    var d=floor(n)
    var m=floor(60*(n-d))
    var s=(n-d)*60-m
    }
    var dms=d+m/100+s*0.006
    if (neg)
    dms=-dms
    return(dms)
    }function deg(n)
    {
    var neg=(n<0)
    with(Math)
    {
    n=abs(n)
    var d=floor(n)
    var m=floor((n-d)*100)
    var s=(n-d)*100-m
    }
    var deg=d+m/60+s/36
    if (neg)
    deg=-deg
    return(deg)
    }function degressToRadians(degress)
    {
    return(degress*Math.PI/180)
    }function radiansToDegress(radians)
    {
    return(radians*180/Math.PI)
    }
    function keypress()
    {
    if (event.keyCode==48 || event.keyCode==96)
    inputkey("0");
    else if (event.keyCode==49 || event.keyCode==97)
    inputkey("1");
    else if (event.keyCode==50 || event.keyCode==98)
    inputkey("2");
    else if (event.keyCode==51 || event.keyCode==99)
    inputkey("3");
    else if (event.keyCode==52 || event.keyCode==100)
    inputkey("4");
    else if (event.keyCode==53 || event.keyCode==101)
    inputkey("5");
    else if (event.keyCode==54 || event.keyCode==102)
    inputkey("6");
    else if (event.keyCode==55 || event.keyCode==103)
    inputkey("7");
    else if (event.keyCode==56 || event.keyCode==104)
    inputkey("8");
    else if (event.keyCode==57 || event.keyCode==105)
    inputkey("9");
    else if (event.keyCode==110 || event.keyCode==190)
    inputkey(".");
    else if (event.keyCode==65)
    inputkey("a");
    else if (event.keyCode==66)
    inputkey("b");
    else if (event.keyCode==67)
    inputkey("c");
    else if (event.keyCode==68)
    inputkey("d");
    else if (event.keyCode==69)
    inputkey("e");
    else if (event.keyCode==70)
    inputkey("f");
    else if (event.keyCode==107 || event.keyCode==187)
    operation('+',5);
    else if (event.keyCode==109 || event.keyCode==189)
    operation('-',5);
    else if (event.keyCode==106)
    operation('*',6);
    else if (event.keyCode==111 || event.keyCode==191)
    operation('/',6);
    }//界面//-->
    </script>
    </head>
    <!--written by GoldHuman li hai-->
    <!--2000.8-->
      

  6.   

    //等号function result()
    {
    endNumber=true
    while (layer>0)
    disbracket()
    var temp=stack+document.calc.display.value
    while ((level.charAt(level.length-1))>0)
    {
    temp=parse(temp)
    level=level.slice(0,-1)
    } document.calc.display.value=temp
    document.calc.bracket.value=""
    document.calc.operator.value=""
    stack=""
    level="0"
    }
    //修改键function backspace()
    {
    if (!endNumber)
    {
    if(document.calc.display.value.length>1)
    document.calc.display.value=document.calc.display.value.substring(0,document.calc.display.value.length - 1)
    else
    document.calc.display.value=0
    }
    }function clearall()
    {
    document.calc.display.value=0
    endNumber=true
    stack=""
    level="0"
    layer=""
    document.calc.operator.value=""
    document.calc.bracket.value=""
    }
    //转换键function inputChangCarry(newcarry)
    {
    endNumber=true
    document.calc.display.value=(decto(todec(document.calc.display.value,carry),newcarry))
    carry=newcarry document.calc.sin.disabled=(carry!=10)
    document.calc.cos.disabled=(carry!=10)
    document.calc.tan.disabled=(carry!=10)
    document.calc.bt.disabled=(carry!=10)
    document.calc.pi.disabled=(carry!=10)
    document.calc.e.disabled=(carry!=10)
    document.calc.kp.disabled=(carry!=10)

    document.calc.k2.disabled=(carry<=2)
    document.calc.k3.disabled=(carry<=2)
    document.calc.k4.disabled=(carry<=2)
    document.calc.k5.disabled=(carry<=2)
    document.calc.k6.disabled=(carry<=2)
    document.calc.k7.disabled=(carry<=2)
    document.calc.k8.disabled=(carry<=8)
    document.calc.k9.disabled=(carry<=8)
    document.calc.ka.disabled=(carry<=10)
    document.calc.kb.disabled=(carry<=10)
    document.calc.kc.disabled=(carry<=10)
    document.calc.kd.disabled=(carry<=10)
    document.calc.ke.disabled=(carry<=10)
    document.calc.kf.disabled=(carry<=10)

    }function inputChangAngle(angletype)
    {
    endNumber=true
    angle=angletype
    if (angle=="d")
    document.calc.display.value=radiansToDegress(document.calc.display.value)
    else
    document.calc.display.value=degressToRadians(document.calc.display.value)
    endNumber=true
    }function inputshift()
    {
    if (document.calc.shiftf.checked)
    {
    document.calc.bt.value="deg "
    document.calc.ln.value="exp "
    document.calc.log.value="expd"

    if (document.calc.hypf.checked)
    {
    document.calc.sin.value="ahs "
    document.calc.cos.value="ahc "
    document.calc.tan.value="aht "
    }
    else
    {
    document.calc.sin.value="asin"
    document.calc.cos.value="acos"
    document.calc.tan.value="atan"
    }

    document.calc.sqr.value="x^.5"
    document.calc.cube.value="x^.3"

    document.calc.floor.value="小数"
    }
    else
    {
    document.calc.bt.value="d.ms"
    document.calc.ln.value=" ln "
    document.calc.log.value="log " if (document.calc.hypf.checked)
    {
    document.calc.sin.value="hsin"
    document.calc.cos.value="hcos"
    document.calc.tan.value="htan"
    }
    else
    {
    document.calc.sin.value="sin "
    document.calc.cos.value="cos "
    document.calc.tan.value="tan "
    }

    document.calc.sqr.value="x^2 "
    document.calc.cube.value="x^3 "

    document.calc.floor.value="取整"
    }}
    //存储器部分function clearmemory()
    {
    mem=0
    document.calc.memory.value="   "
    }function getmemory()
    {
    endNumber=true
    document.calc.display.value=decto(mem,carry)
    }function putmemory()
    {
    endNumber=true
    if (document.calc.display.value!=0)
    {
    mem=todec(document.calc.display.value,carry)
    document.calc.memory.value=" M "
    }
    else
    document.calc.memory.value="   "
    }function addmemory()
    {
    endNumber=true
    mem=parseFloat(mem)+parseFloat(todec(document.calc.display.value,carry))
    if (mem==0)
    document.calc.memory.value="   "
    else
    document.calc.memory.value=" M "
    }function multimemory()
    {
    endNumber=true
    mem=parseFloat(mem)*parseFloat(todec(document.calc.display.value,carry))
    if (mem==0)
    document.calc.memory.value="   "
    else
    document.calc.memory.value=" M "
    }//十进制转换function todec(num,oldcarry)
    {
    if (oldcarry==10 || num==0) return(num)
    var neg=(num.charAt(0)=="-")
    if (neg) num=num.substr(1)
    var newnum=0
    for (var index=1;index<=num.length;index++)
    newnum=newnum*oldcarry+hexnum.indexOf(num.charAt(index-1))
    if (neg)
    newnum=-newnum
    return(newnum)
    }function decto(num,newcarry)
    {
    var neg=(num<0)
    if (newcarry==10 || num==0) return(num)
    num=""+Math.abs(num)
    var newnum=""
    while (num!=0)
    {
    newnum=hexnum.charAt(num%newcarry)+newnum
    num=Math.floor(num/newcarry)
    }
    if (neg)
    newnum="-"+newnum
    return(newnum)
    }
      

  7.   

    <body onKeyDown="keypress()">
    <div align="center">
    <form name=calc>
    <table border="1" width="500" height="250">
    <tr>
    <td height=50>
    <table width=500>
    <td width="133">
    </td>
    <td width="353">
    <div align=center>
    <input type=text name="display" value="0" readonly size="40">
    </div>
    </td>
    </table>
    </td>
    </tr>
    <tr>
    <td>
    <table width=500>
    <tr>
    <td width=290>
    <input type=radio name="carry" onClick="inputChangCarry(16)">
    十六进制
    <input type=radio name="carry" checked onClick="inputChangCarry(10)">
    十进制
    <input type=radio name="carry" onClick="inputChangCarry(8)">
    八进制
    <input type=radio name="carry" onClick="inputChangCarry(2)">
    二进制
    </td>
    <td>
    </td>
    <td width=135>
    <input type=radio name="angle" value="d" onClick="inputChangAngle('d')" checked>
    角度制
    <input type=radio name="angle" value="r" onClick="inputChangAngle('r')">
    弧度制
    </td>
    </tr>
    </table>
    <table width=500>
    <tr>
    <td width=170>
    <input name="shiftf" type="checkbox" onclick="inputshift()">上档功能
    <input name="hypf" type="checkbox" onclick="inputshift()">双曲函数
    </td>
    <td>
    <input name="bracket" value="" type=text size=3 readonly style="background-color=lightgrey">
    <input name="memory" value="" type=text size=3 readonly style="background-color=lightgrey">
    <input name="operator" value="" type=text size=3 readonly style="background-color=lightgrey">
    </td>
    <td width=183>
    <input type="button" value=" 退格 "
    onclick="backspace()" style="color=red">
    <input type="button" value=" 清屏 "
    onClick="document.calc.display.value = 0 " style="color=red">
    <input type="button" value=" 全清"
    onClick="clearall()" style="color=red">
    </td>
    </tr>
    </table><table width=500>
    <tr>
    <td>
    <table>
    <tr  align=center>
    <td>
    <input name=pi type="button" value=" PI "
    onClick="inputfunction('pi','pi')" style="color=blue">
    </td><td>
    <input name=e type="button" value=" E  "
    onClick="inputfunction('e','e')" style="color=blue">
    </td><td>
    <input name=bt type="button" value="d.ms"
    onClick="inputfunction('dms','deg')" style="color=#ff00ff">
    </td>
    </tr>
    <tr  align=center>
    <td>
    <input  type="button" value=" (  "
    onClick="addbracket()" style="color=#ff00ff">
    </td><td>
    <input  type="button" value=" )  "
    onClick="disbracket()" style="color=#ff00ff">
    </td><td>
    <input name=ln type="button" value=" ln "
    onClick="inputfunction('ln','exp')" style="color=#ff00ff">
    </td>
    </tr>
    <tr  align=center>
    <td>
    <input name=sin type="button" value="sin "
    onClick="inputtrig('sin','arcsin','hypsin','ahypsin')" style="color=#ff00ff">
    </td><td>
    <input  type="button" value="x^y "
    onClick="operation('^',7)" style="color=#ff00ff">
    </td><td>
    <input name=log type="button" value="log "
    onClick="inputfunction('log','expdec')" style="color=#ff00ff">
    </td>
    </tr>
    <tr  align=center>
    <td>
    <input name=cos type="button" value="cos "
    onClick="inputtrig('cos','arccos','hypcos','ahypcos')" style="color=#ff00ff">
    </td><td>
    <input name=cube type="button" value="x^3 "
    onClick="inputfunction('cube','cubt')" style="color=#ff00ff">
    </td><td>
    <input  type="button" value=" n! "
    onClick="inputfunction('!','!')" style="color=#ff00ff">
    </td>
    </tr>
    <tr  align=center>
    <td>
    <input name=tan type="button" value="tan "
    onClick="inputtrig('tan','arctan','hyptan','ahyptan')" style="color=#ff00ff">
    </td><td>
    <input name=sqr type="button" value="x^2 "
    onClick="inputfunction('sqr','sqrt')" style="color=#ff00ff">
    </td><td>
    <input  type="button" value="1/x "
    onClick="inputfunction('recip','recip')" style="color=#ff00ff">
    </td>
    </tr>
    </table>
    </td>
    <td width=30>
    </td>
    <td>
    <table>
    <tr>
    <td>
    <input  type="button" value=" 储存 "
    onClick="putmemory()" style="color=red">
    </td>
    </tr>
    <td>
    <input  type="button" value=" 取存 "
    onClick="getmemory()" style="color=red">
    </td>
    </tr>
    <tr>
    <td>
    <input  type="button" value=" 累存 "
    onClick="addmemory()" style="color=red">
    </td>
    </tr>
    <tr>
    <td>
    <input  type="button" value=" 积存 "
    onClick="multimemory()" style="color=red">
    </td>
    </tr>
    <tr>
    <td height="33">
    <input  type="button" value=" 清存 "
    onClick="clearmemory()" style="color=red">
    </td>
    </tr>
    </table>
    </td>
    <td width=30>
    </td>
    <td>
    <table>
    <tr  align=center>
    <td>
    <input name=k7 type="button" value=" 7 "
    onClick="inputkey('7')" style="color=blue">
    </td>
      

  8.   

    //表达式解析function parse(string)
    {
    if (string.match(/^(.*\d[\+\-\*\/\%\^\&\|x\<])?([+-]?[0-9a-f\.]+)([\+\-\*\/\%\^\&\|x\<])([+-]?[0-9a-f\.]+)$/))
    return(RegExp.$1+cypher(RegExp.$2,RegExp.$3,RegExp.$4))
    else
    return(string)
    }//数学运算和位运算function cypher(left,join,right)
    {
    left=todec(left,carry)
    right=todec(right,carry)
    if (join=="+")
    return(decto(parseFloat(left)+parseFloat(right),carry))
    if (join=="-")
    return(decto(left-right,carry))
    if (join=="*")
    return(decto(left*right,carry))
    if (join=="/" && right!=0)
    return(decto(left/right,carry))
    if (join=="%")
    return(decto(left%right,carry))
    if (join=="&")
    return(decto(left&right,carry))
    if (join=="|")
    return(decto(left|right,carry))
    if (join=="^")
    return(decto(Math.pow(left,right),carry))
    if (join=="x")
    return(decto(left^right,carry))
    if (join=="<")
    return(decto(left<<right,carry))
    alert("除数不能为零")
    return(left)
    }//函数计算function funcalc(fun,num)
    {
    with(Math)
    {
    if (fun=="pi")
    return(PI)
    if (fun=="e")
    return(E) if (fun=="abs")
    return(abs(num))
    if (fun=="ceil")
    return(ceil(num))
    if (fun=="round")
    return(round(num)) if (fun=="floor")
    return(floor(num))
    if (fun=="deci")
    return(num-floor(num))
    if (fun=="ln" && num>0)
    return(log(num))
    if (fun=="exp")
    return(exp(num))
    if (fun=="log" && num>0)
    return(log(num)*LOG10E)
    if (fun=="expdec")
    return(pow(10,num))
    if (fun=="cube")
    return(num*num*num)
    if (fun=="cubt")
    return(pow(num,1/3))
    if (fun=="sqr")
    return(num*num)
    if (fun=="sqrt" && num>=0)
    return(sqrt(num)) if (fun=="!")
    return(factorial(num)) if (fun=="recip" && num!=0)
    return(1/num)

    if (fun=="dms")
    return(dms(num))
    if (fun=="deg")
    return(deg(num)) if (fun=="~")
    return(~num)

    if (angle=="d")
    {
    if (fun=="sin")
    return(sin(degressToRadians(num)))
    if (fun=="cos")
    return(cos(degressToRadians(num)))
    if (fun=="tan")
    return(tan(degressToRadians(num))) if (fun=="arcsin" && abs(num)<=1)
    return(radiansToDegress(asin(num)))
    if (fun=="arccos" && abs(num)<=1)
    return(radiansToDegress(acos(num)))
    if (fun=="arctan")
    return(radiansToDegress(atan(num)))
    }
    else
    {
    if (fun=="sin")
    return(sin(num))
    if (fun=="cos")
    return(cos(num))
    if (fun=="tan")
    return(tan(num)) if (fun=="arcsin" && abs(num)<=1)
    return(asin(num))
    if (fun=="arccos" && abs(num)<=1)
    return(acos(num))
    if (fun=="arctan")
    return(atan(num))
    }

    if (fun=="hypsin")
    return((exp(num)-exp(0-num))*0.5)
    if (fun=="hypcos")
    return((exp(num)+exp(-num))*0.5)
    if (fun=="hyptan")
    return((exp(num)-exp(-num))/(exp(num)+exp(-num))) if (fun=="ahypsin" | fun=="hypcos" | fun=="hyptan")
    {
    alert("对不起,公式还没有查到!")
    return(num)
    }

    alert("超出函数定义范围")
    return(num)
    }
    }function factorial(n)
    {
    n=Math.abs(parseInt(n))
    var fac=1
    for (;n>0;n-=1)
    fac*=n
    return(fac)
    }function dms(n)
    {
    var neg=(n<0)
    with(Math)
    {
    n=abs(n)
    var d=floor(n)
    var m=floor(60*(n-d))
    var s=(n-d)*60-m
    }
    var dms=d+m/100+s*0.006
    if (neg) 
    dms=-dms
    return(dms)
    }function deg(n)
    {
    var neg=(n<0)
    with(Math)
    {
    n=abs(n)
    var d=floor(n)
    var m=floor((n-d)*100)
    var s=(n-d)*100-m
    }
    var deg=d+m/60+s/36
    if (neg) 
    deg=-deg
    return(deg)
    }function degressToRadians(degress)
    {
    return(degress*Math.PI/180)
    }function radiansToDegress(radians)
    {
    return(radians*180/Math.PI)
    }
      

  9.   


    <td>
    <input name=k8 type="button" value=" 8 "
    onClick="inputkey('8')" style="color=blue">
    </td><td>
    <input name=k9 type="button" value=" 9 "
    onClick="inputkey('9')" style="color=blue">
    </td><td>
    <input  type="button" value=" / "
    onClick="operation('/',6)" style="color=red">
    </td><td>
    <input  type="button" value="取余"
    onClick="operation('%',6)" style="color=red">
    </td><td>
    <input  type="button" value=" 与 "
    onClick="operation('&',3)" style="color=red">
    </td>
    </tr><tr  align=center>
    <td>
    <input name=k4 type="button" value=" 4 "
    onClick="inputkey('4')" style="color=blue">
    </td><td>
    <input name=k5 type="button" value=" 5 "
    onClick="inputkey('5')" style="color=blue">
    </td><td>
    <input name=k6 type="button" value=" 6 "
    onClick="inputkey('6')" style="color=blue">
    </td><td>
    <input  type="button" value=" * "
    onClick="operation('*',6)" style="color=red">
    </td><td>
    <input name=floor type="button" value="取整"
    onClick="inputfunction('floor','deci')" style="color=red">
    </td><td>
    <input  type="button" value=" 或 "
    onClick="operation('|',1)" style="color=red">
    </td>
    </tr><tr  align=center>
    <td>
    <input  type="button" value=" 1 "
    onClick="inputkey('1')" style="color=blue">
    </td><td>
    <input name=k2 type="button" value=" 2 "
    onClick="inputkey('2')" style="color=blue">
    </td><td>
    <input name=k3 type="button" value=" 3 "
    onClick="inputkey('3')" style="color=blue">
    </td><td>
    <input  type="button" value=" - "
    onClick="operation('-',5)" style="color=red">
    </td><td>
    <input  type="button" value="左移"
    onClick="operation('<',4)" style="color=red">
    </td><td>
    <input  type="button" value=" 非 "
    onClick="inputfunction('~','~')" style="color=red">
    </td>
    </tr><tr  align=center>
    <td>
    <input  type="button" value=" 0 "
    onClick="inputkey('0')" style="color=blue">
    </td><td>
    <input  type="button" value="+/-"
    onClick="changeSign()" style="color=blue">
    </td><td>
    <input name=kp type="button" value=" . "
    onClick="inputkey('.')" style="color=blue">
    </td><td>
    <input  type="button" value=" + "
    onClick="operation('+',5)" style="color=red">
    </td><td>
    <input  type="button" value=" ＝ "
    onClick="result()" style="color=red">
    </td><td>
    <input  type="button" value="异或"
    onClick="operation('x',2)" style="color=red">
    </td>
    </tr><tr  align=center>
    <td>
    <input name=ka type="button" value=" A "
    onClick="inputkey('a')" style="color=blue" disabled=true>
    </td><td>
    <input name=kb type="button" value=" B "
    onClick="inputkey('b')" style="color=blue" disabled=true>
    </td><td>
    <input name=kc type="button" value=" C "
    onClick="inputkey('c')" style="color=blue" disabled=true>
    </td><td>
    <input name=kd type="button" value=" D "
    onClick="inputkey('d')" style="color=blue" disabled=true>
    </td><td>
    <input name=ke type="button" value=" E"
    onClick="inputkey('e')" style="color=blue" disabled=true>
    </td><td>
    <input name=kf type="button" value=" F"
    onClick="inputkey('f')" style="color=blue" disabled=true>
    </td>
    </tr>
    </table>
    </td>
    </tr>
    </table>
    </td>
    </tr>
    </table>
    </form>
    </div>
    </body>
    </html>
      

  10.   

    //界面//-->
    </script>
    </head>
    <!--written by GoldHuman li hai-->
    <!--2000.8-->
    <body><p align="right">
    <br>
    <SCRIPT LANGUAGE="JavaScript" src="pclock.js"></script><div align="center">
    <form name=calc>
    <table border="1" width="500" height="250">
    <tr>
    <td height=50>
    <table width=500>
                  <td>&nbsp; </td>
    <td>
    <div align=center>
    <input type=text name="display" value="0" readonly size="40">
    </div>
    </td>
    </table>
    </td>
    </tr>
    <tr>
    <td>
    <table width=500>
    <tr>
    <td width=290>
          <input type=radio name="carry" onClick="inputChangCarry(16)">
          十六进制  
          <input type=radio name="carry" checked onClick="inputChangCarry(10)">
          十进制  
          <input type=radio name="carry" onClick="inputChangCarry(8)">
          八进制  
          <input type=radio name="carry" onClick="inputChangCarry(2)">
          二进制  
    </td>
    <td>
    </td>
    <td width=135>
          <input type=radio name="angle" value="d" onClick="inputChangAngle('d')" checked>
          角度制 
          <input type=radio name="angle" value="r" onClick="inputChangAngle('r')">
          弧度制 
    </td>
    </tr>
    </table>
    <table width=500>
    <tr>
    <td width=170>
    <input name="shiftf" type="checkbox" onclick="inputshift()">上档功能
    <input name="hypf" type="checkbox" onclick="inputshift()">双曲函数
    </td>
    <td>
    <input name="bracket" value="" type=text size=3 readonly style="background-color=lightgrey">
    <input name="memory" value="" type=text size=3 readonly style="background-color=lightgrey">
    <input name="operator" value="" type=text size=3 readonly style="background-color=lightgrey">
    </td>
    <td width=183>
          <input type="button" value=" 退格 " 
       onclick="backspace()" style="color=red">
          <input type="button" value=" 清屏 "
       onClick="document.calc.display.value = 0 " style="color=red">
          <input type="button" value=" 全清"
       onClick="clearall()" style="color=red">
    </td>
    </tr>
    </table><table width=500>
    <tr>
    <td>
    <table>
    <tr  align=center>
    <td>
    <input name=pi type="button" value=" PI "
      onClick="inputfunction('pi','pi')" style="color=blue">
    </td><td>
    <input name=e type="button" value=" E  "
      onClick="inputfunction('e','e')" style="color=blue">
    </td><td>
    <input name=bt type="button" value="d.ms"
    onClick="inputfunction('dms','deg')" style="color=#ff00ff">
    </td>
    </tr>
    <tr  align=center>
    <td>
    <input  type="button" value=" (  "
      onClick="addbracket()" style="color=#ff00ff">
    </td><td>
    <input  type="button" value=" )  "
      onClick="disbracket()" style="color=#ff00ff">
    </td><td>
    <input name=ln type="button" value=" ln "
      onClick="inputfunction('ln','exp')" style="color=#ff00ff">
    </td>
    </tr>
    <tr  align=center>
    <td>
    <input name=sin type="button" value="sin "
      onClick="inputtrig('sin','arcsin','hypsin','ahypsin')" style="color=#ff00ff">
    </td><td>
    <input  type="button" value="x^y "
      onClick="operation('^',7)" style="color=#ff00ff">
    </td><td>
    <input name=log type="button" value="log "
      onClick="inputfunction('log','expdec')" style="color=#ff00ff">
    </td>
    </tr>
    <tr  align=center>
    <td>
    <input name=cos type="button" value="cos "
      onClick="inputtrig('cos','arccos','hypcos','ahypcos')" style="color=#ff00ff">
    </td><td>
    <input name=cube type="button" value="x^3 "
      onClick="inputfunction('cube','cubt')" style="color=#ff00ff">
    </td><td>
    <input  type="button" value=" n! "
      onClick="inputfunction('!','!')" style="color=#ff00ff">
    </td>
    </tr>
    <tr  align=center>
    <td>
    <input name=tan type="button" value="tan "
      onClick="inputtrig('tan','arctan','hyptan','ahyptan')" style="color=#ff00ff">
    </td>
    <td>
    <input name=sqr type="button" value="x^2 "
      onClick="inputfunction('sqr','sqrt')" style="color=#ff00ff">
    </td>
      

  11.   

    <td>
    <input  type="button" value="1/x "
      onClick="inputfunction('recip','recip')" style="color=#ff00ff">
    </td>
    </tr>
        </table>
        </td>
    <td width=30>
    </td>
        <td>
        <table>
    <tr>
    <td>
          <input  type="button" value=" 储存 "
      onClick="putmemory()" style="color=red">
    </td>
    </tr>
    <td>
          <input  type="button" value=" 取存 "
      onClick="getmemory()" style="color=red">
    </td>
    </tr>
    <tr>
    <td>
          <input  type="button" value=" 累存 "
      onClick="addmemory()" style="color=red">
    </td>
    </tr>
    <tr>
    <td>
          <input  type="button" value=" 积存 "
      onClick="multimemory()" style="color=red">
    </td>
    </tr>
    <tr>
                        <td height="33"> 
                          <input  type="button" value=" 清存 "
      onClick="clearmemory()" style="color=red">
    </td>
    </tr>
        </table>
        </td>
    <td width=30>
    </td>
        <td>
        <table>
    <tr  align=center>
    <td>
    <input name=k7 type="button" value=" 7 "
      onClick="inputkey('7')" style="color=blue">
    </td><td>
    <input name=k8 type="button" value=" 8 "
      onClick="inputkey('8')" style="color=blue">
    </td><td>
    <input name=k9 type="button" value=" 9 "
      onClick="inputkey('9')" style="color=blue">
    </td><td>
    <input  type="button" value=" / "
      onClick="operation('/',6)" style="color=red">
    </td><td>
    <input  type="button" value="取余"
      onClick="operation('%',6)" style="color=red">
    </td><td>
    <input  type="button" value=" 与 "
      onClick="operation('&',3)" style="color=red">
    </td>
    </tr><tr  align=center>
    <td>
    <input name=k4 type="button" value=" 4 "
      onClick="inputkey('4')" style="color=blue">
    </td><td>
    <input name=k5 type="button" value=" 5 "
      onClick="inputkey('5')" style="color=blue">
    </td><td>
    <input name=k6 type="button" value=" 6 "
      onClick="inputkey('6')" style="color=blue">
    </td><td>
    <input  type="button" value=" * "
      onClick="operation('*',6)" style="color=red">
    </td><td>
    <input name=floor type="button" value="取整"
      onClick="inputfunction('floor','deci')" style="color=red">
    </td><td>
    <input  type="button" value=" 或 "
      onClick="operation('|',1)" style="color=red">
    </td>
    </tr><tr  align=center>
    <td>
    <input  type="button" value=" 1 "
      onClick="inputkey('1')" style="color=blue">
    </td><td>
    <input name=k2 type="button" value=" 2 "
      onClick="inputkey('2')" style="color=blue">
    </td><td>
    <input name=k3 type="button" value=" 3 "
      onClick="inputkey('3')" style="color=blue">
    </td><td>
    <input  type="button" value=" - "
      onClick="operation('-',5)" style="color=red">
    </td><td>
    <input  type="button" value="左移"
      onClick="operation('<',4)" style="color=red">
    </td><td>
    <input  type="button" value=" 非 "
      onClick="inputfunction('~','~')" style="color=red">
    </td>
    </tr><tr  align=center>
    <td>
    <input  type="button" value=" 0 "
      onClick="inputkey('0')" style="color=blue">
    </td><td>
    <input  type="button" value="+/-"
      onClick="changeSign()" style="color=blue">
    </td><td>
    <input name=kp type="button" value=" . "
      onClick="inputkey('.')" style="color=blue">
    </td><td>
    <input  type="button" value=" + "
      onClick="operation('+',5)" style="color=red">
    </td><td>
    <input  type="button" value=" ＝ "
      onClick="result()" style="color=red">
    </td><td>
    <input  type="button" value="异或"
      onClick="operation('x',2)" style="color=red">
    </td>
    </tr><tr  align=center>
    <td>
    <input name=ka type="button" value=" A "
      onClick="inputkey('a')" style="color=blue" disabled=true>
    </td><td>
    <input name=kb type="button" value=" B "
      onClick="inputkey('b')" style="color=blue" disabled=true>
    </td><td>
    <input name=kc type="button" value=" C "
      onClick="inputkey('c')" style="color=blue" disabled=true>
    </td><td>
    <input name=kd type="button" value=" D "
      onClick="inputkey('d')" style="color=blue" disabled=true>
    </td><td>
    <input name=ke type="button" value=" E"
      onClick="inputkey('e')" style="color=blue" disabled=true>
    </td><td>
    <input name=kf type="button" value=" F"
      onClick="inputkey('f')" style="color=blue" disabled=true>
    </td>
    </tr>
    </table>
    </td>
    </tr>
    </table>
    </td>
    </tr>
    </table>
    </form>
    </div><p align="center"> 
    <a href="../index.htm">回到首页</a></p></body>
    </html>
      

  12.   

    或者是
    http://www.yaguo.com/~dq9801/zhiyuan/Calcu1.htm
      

  13.   

    算了，我把它上传掉得了。http://go2.163.com/stonelf/jisuan.htm
      

  14.   

    贴个简单的
    <html><head>
    <meta http-equiv="Content-Type"
    content="text/html; charset=gb_2312-80">
    <meta name="GENERATOR" content="Microsoft FrontPage Express 2.0">
    <title>JAVA计算器</title>
    <style type="text/css">
    <!--
    td {  font: 9pt "宋体"; color: #FFFFFF}
    .Button {  font: 9pt "宋体"; color: #FFFFFF; background: #brown; margin: 4px 4px; width: 40px; height: 20px; border-color: #CCCCCC #333333 #333333 #CCCCCC; border-top-width: 2px; border-right-width: 2px; border-bottom-width: 2px; border-left-width: 2px}
    .text_input {  font: 9pt "Verdana", "Arial", "Helvetica", "sans-serif"; color: #000000; background: #CCCCCC; text-align: right}
    a {  font: 9pt "宋体"; color: #FFFFFF}
    -->
    </style>
    </head><body bgcolor="#CCCC99" topmargin="0" leftmargin="1"
    marginwidth="1" marginheight="1">
    <form name="Keypad">
      <div align="center">
        <center>
          <br>
          <table border="1" cellpadding="0"
        cellspacing="1" width="249" bgcolor="#B5B56A"
        bordercolor="#D0CC98" height="60">
            <tr>
                <td align="middle" colspan="4"><input type="text"
                size="25" name="ReadOut" value="0" width="100%"
                class="text_input"></td>
                <td width="0"><input type="button" name="btnClear"
                value="  C  " onclick="Clear()" class="Button"></td>
                <td width="50"><input type="button"
                name="btnClearEntry2" value=" CE "
                onclick="ClearEntry()" class="Button"></td>
            </tr>
            <tr>
                <td align="center" width="50"><input type="button"
                name="btnSeven" value="  7  " onclick="NumPressed(7)"
                class="Button"></td>
                <td align="center" width="50"><input type="button"
                name="btnEight" value="  8  " onclick="NumPressed(8)"
                class="Button"></td>
                <td align="center" width="50"><input type="button"
                name="btnNine" value="  9  " onclick="NumPressed(9)"
                class="Button"></td>
                <th width="50"><p align="left"><input type="button"
                name="btnHex" value="HEX" onclick="hexchange()"
                class="Button"></p>
                </th>
                <td align="center" width="0"><input type="button"
                name="btnClearEntry222" value="OCT"
                onclick="octchange()" class="Button"></td>
                <td align="center" width="50"><input type="button"
                name="btnClearEntry223" value="BIN"
                onclick="binchange()" class="Button"></td>
            </tr>
            <tr>
                <td width="50"><input type="button" name="btnFour"
                value="  4  " onclick="NumPressed(4)" class="Button"></td>
                <td width="50"><input type="button" name="btnFive"
                value="  5  " onclick="NumPressed(5)" class="Button"></td>
                <td width="50"><input type="button" name="btnSix"
                value="  6  " onclick="NumPressed(6)" class="Button"></td>
                <td width="50"><input type="button" name="btnPlus"
                value="  +  " onclick="Operation('+')" class="Button"></td>
                <td width="0"><input type="button" name="btnNeg"
                value=" +/- " onclick="Neg()" class="Button"></td>
                <td width="50"><input type="button" name="btnPercent"
                value=" % " onclick="Percent()" class="Button"></td>
            </tr>
            <tr>
                <td width="50"><input type="button" name="btnOne"
                value="  1  " onclick="NumPressed(1)" class="Button"></td>
                <td width="50"><input type="button" name="btnTwo"
                value="  2  " onclick="NumPressed(2)" class="Button"></td>
                <td width="50"><input type="button" name="btnThree"
                value="  3  " onclick="NumPressed(3)" class="Button"></td>
                <td width="50"><input type="button" name="btnMinus"
                value="  -   " onclick="Operation('-')"
                class="Button"></td>
                <td width="0"><input type="button" name="btnMultiply"
                value="  *  " onclick="Operation('*')" class="Button"></td>
                <td width="50"><input type="button" name="btnDivide"
                value="  /   " onclick="Operation('/')"
                class="Button"></td>
            </tr>
            <tr>
                <td width="50"><input type="button" name="btnZero"
                value="  0  " onclick="NumPressed(0)" class="Button"></td>
                <td width="50"><input type="button" name="btnDecimal"
                value="   .  " onclick="Decimal()" class="Button"></td>
                <td width="50"><input type="button" name="btnEquals"
                value="  =  " onclick="Operation('=')" class="Button"></td>
                <td width="50">　</td>
                <td width="0">　</td>
                <td width="50">　</td>
            </tr>
        </table>
        </center></div>
    </form>
    <script language="JavaScript">
    var FKeyPad = document.Keypad;
    var Accum = 0;
    var FlagNewNum = false;
    var PendingOp = "";
    function NumPressed (Num) {
    if (FlagNewNum) {
    FKeyPad.ReadOut.value  = Num;
    FlagNewNum = false;
       }
    else {
    if (FKeyPad.ReadOut.value == "0")
    FKeyPad.ReadOut.value = Num;
    else
    FKeyPad.ReadOut.value += Num;
       }
    }
    function Operation (Op) {
    var Readout = FKeyPad.ReadOut.value;
    if (FlagNewNum && PendingOp != "=");
    else
    {
    FlagNewNum = true;
    if ( '+' == PendingOp )
    Accum += parseFloat(Readout);
    else if ( '-' == PendingOp )
    Accum -= parseFloat(Readout);
    else if ( '/' == PendingOp )
    Accum /= parseFloat(Readout);
    else if ( '*' == PendingOp )
    Accum *= parseFloat(Readout);
    else
    Accum = parseFloat(Readout);
    FKeyPad.ReadOut.value = Accum;
    PendingOp = Op;
       }
    }
    function Decimal () {
    var curReadOut = FKeyPad.ReadOut.value;
    if (FlagNewNum) {
    curReadOut = "0.";
    FlagNewNum = false;
       }
    else
    {
    if (curReadOut.indexOf(".") == -1)
    curReadOut += ".";
       }
    FKeyPad.ReadOut.value = curReadOut;
    }
    function ClearEntry () {
    FKeyPad.ReadOut.value = "0";
    FlagNewNum = true;
    }
    function Clear () {
    Accum = 0;
    PendingOp = "";
    ClearEntry();
    }
    function Neg () {
    FKeyPad.ReadOut.value = parseFloat(FKeyPad.ReadOut.value) * -1;
    }
    function Percent () {
    FKeyPad.ReadOut.value = (parseFloat(FKeyPad.ReadOut.value) / 100) * parseFloat(Accum);
    }
    function hexchange()
    {
    var hex,dec;
    dec = parseFloat(FKeyPad.ReadOut.value);
    hex = dec.toString(16);
    window.alert("该十进制数转成十六进制数为："+ hex);
    }
    function octchange()
    {
    var oct,dec;
    dec = parseFloat(FKeyPad.ReadOut.value);
    oct = dec.toString(8);
    window.alert("该十进制数转成八进制数为："+ oct);
    }
    function binchange()
    {
    var bin,dec;
    dec = parseFloat(FKeyPad.ReadOut.value);
    bin = dec.toString(2);
    window.alert("该十进制数转成二进制数为："+ bin);
    }
    </script>
    </body>
    </html>