假设<form name=list>
<input type=text name=url onclick=show()>
</form><script language=javascript>
function show()
{
if(document.list.url.value='http://')alert('请输入网址!');
……自由发挥
}
</script>
记得给分哈!
<input type=text name=url onclick=show()>
</form><script language=javascript>
function show()
{
if(document.list.url.value='http://')alert('请输入网址!');
……自由发挥
}
</script>
记得给分哈!
<input type=text name=url>
<input type=button name=cc onclick=show() value="ckeck it"></form><script language=javascript>
function show()
{
var reg = /(^[http:\/\/\w{2,}])([\.\w{2,}]+)/g;
if(reg.test(document.list.url.value)) alert('right!');
else alert("wrong!!");
}
//alert(window.clientInformation.cpuClass);
</script>
大致就这思路,代码有点问题,你再改改吧