<form name="f1" method="post" action="">
<label>
<input type="text" name="t1">
<input type=button value=æ交 onclick="add();">
</label>
</form>
<script language="javascript">
function add()
{
var n1=document.f1.t1.value;
if(isNaN(parseInt(n1)))
{
document.f1.t1.value="0";
}
else
{
var n3=parseInt(n1);
document.f1.t1.value=n3;
}
}
</script>
åæHTMLæ件就è¡äº
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