求输入框验证的一段代码

Question

<script language=javascript>
function b123(e)
{
var a=e.value;
if(!isNaN(a)&&(a>10000))
{
document.all.c123.innerHTML=a;
}
}
</script>
<input name=a123 onblur=b123(this)>
<div id=c123></div>
测试通过了

Answer 1

修改下，改为显示1000
<script language=javascript>
function b123(e)
{
var a=e.value;
if(!isNaN(a)&&(a>10000))
{
document.all.c123.innerHTML=1000;
}
else
{
document.all.c123.innerHTML="";
}
}
</script>
<input name=a123 onblur=b123(this)>
<div id=c123></div>