<form .....>
<input type="text" onkeydown="onkeyup="JavaScript:aaa()" onkeypress="//JavaScript:aaa()">
<!-- 上面三个事件在任意一个中加入处理程序均可 -->
.....
</form><script language="JavaScript">
<!--
function aaa(){
if(event.keyCode == 13){
alert("你点击了回车键.");
// 此处加入你的处理语句
}
}
<input type="text" onkeydown="onkeyup="JavaScript:aaa()" onkeypress="//JavaScript:aaa()">
<!-- 上面三个事件在任意一个中加入处理程序均可 -->
.....
</form><script language="JavaScript">
<!--
function aaa(){
if(event.keyCode == 13){
alert("你点击了回车键.");
// 此处加入你的处理语句
}
}
<form .........>
<input type="text" name="textA" value="">
<input type="submit" onclick="return aaa()">
.....
</form><script language="JavaScript">
<!--
function aaa(){
if(document.all.textA.value==""){
alert("请在文本框内输入内容.");
return false;
}
....// 其他处理语句
//最后返回true,以便完成提交操作
return true;
}
<html>
<head>
<title>无标题文档</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
</head><body bgcolor="#FFFFFF" text="#000000">
<form name="form1" method="post" action="" onsubmit="check()" onkeypress="testbb1()">
<input type="text" name="textfield" value="fsf"sf" >
<input type="text" name="textfield2" onchange="test1()" onkeypress="testbb()">
<input type="text" name="textfield3" value="dasadaa">
<input type="submit" name="Submit" value="提交">
</form>
</body>
</html>
<script language="JavaScript">
var bSubmitFlag=false;
function testbb()
{
if (event.keyCode== 13)
alert("came to enter press");
return false;
}
function testbb1()
{
if (event.keyCode== 13)
alert("form's press function");
return false;
}
function test1()
{
alert("came to test1 onchange");
return false;
}
function test()
{
if (event.keyCode== 13)
{
alert("return key pressed");
form1.textfield2.focus();
fom1.textfield2.select();
// event.returnValue=false;
}
return ;
}
function check()
{
alert("do the action of submit");
if (bSubmitFlag == false)
{
alert("don't sumbit this form!");
return false;
}
else
{
return true;
}
}
</script>
{
if (BeforeSubmit()) //BeforeSubmit 就是 onsubmit()
{
form1.submit();
}
}用button 代替submit()
<form name="form1" id="form1">
<input type="button" onclick="OnOK">
</form>