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文本框字数输入限制

<Script Language="JavaScript">
<!--
 maxLen=10;
function checkMaxInput(form) {
 if (form.message.value.length > maxLen)
 form.message.value = form.message.value.substring(0, maxLen);
 else form.remLen.value = maxLen - form.message.value.length;
}
//-->
</script>


<form name="myform" action="1.asp">

<textarea name=message wrap=physical cols=28 rows=4 onKeyDown="checkMaxInput(this.form)" onKeyUp="checkMaxInput(this.form)"></textarea>
<input type="text" name="remLen" size="3" value="100" ReadOnly>

</form>



文章作者：未知