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http://www.etoow.com/html/2007-08/1187748347.html
countfield.value = maxlimit - field.value.length;
}
//-->
</SCRIPT>
如下是表单:
以下是引用片段:
<form name=myform action="">
<textarea name=message wrap=physical cols=28 rows=4 onKeyDown="textCounter(this.form.message,this.form.remLen,125);" onKeyUp="textCounter(this.form.message,this.form.remLen,125);">
</textarea>
<br>
尚能输入
<input readonly type=text name=remLen size=4 maxlength=3 value="125">
个字符</div>
</form>
用JS限制表单textarea的文字输入量
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