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在线等，急！！
Sub txt1_onkeyUP
if window.event.keyCode>=48 and window.event.keyCode<=105 then
if window.event.keyCode<=57 or window.event.keyCode=>96 then
......
else
form1.txt1.value=""
end if
else
if window.event.keyCode=13 then
else
form1.txt1.value=""
end if
end if
End Sub
<input onkeyup="this.value=this.value.replace(/\D/g,)" onafterpaste="this.value=this.value.replace(/\D/g,)">
---------------------------------------------------------------
<input name=txt1 onchange="if(/\D/.test(this.value)){alert(只能输入数字);this.value=;}">
---------------------------------------------------------------
<input onkeyup="if(isNaN(value))execCommand(undo)" onafterpaste="if(isNaN(value))execCommand(undo)">
<script language="javascript">
<!--
//限制年月日的输入必须是数字
if (document.layers)
document.captureEvents(event.KeyPress);
function blockA(e)
{
if (document.layers)
{
var keyChar =e.which;
}
if (document.all)
{
var keyChar =event.keyCode;
}
if (keyChar>57 || keyChar<46 || keyChar==47 )
{
alert(请输入数字！);
return false;
}
}
document.form1.text1.onkeypress = blockA;
//-->
</script>
