帮你修改一下.<script language="javascript">
function undo()
{document.execCommand('undo');}
</script>-><script language="javascript">
function undo()
{
document.all.num.value=document.all.num.value.replace(/\S$/,"");
}
</script>
function undo()
{document.execCommand('undo');}
</script>-><script language="javascript">
function undo()
{
document.all.num.value=document.all.num.value.replace(/\S$/,"");
}
</script>
解决方案 »
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