转载时请标明文章原始出处和作者信息, 作者: lostsnow.
http://www.lsproc.com/blog/limit_textarea_length_by_js/
From: http://www.phpcake.cn/archives/26/
<script type="text/javascript">
function ismaxlength(obj){
var mlength=obj.getAttribute? parseInt(obj.getAttribute("maxlength")) : ""
if (obj.getAttribute && obj.value.length>mlength)
obj.value=obj.value.substring(0,mlength)
}
</script>
<textarea maxlength="10" onkeyup="return ismaxlength(this)"></textarea>
-- EOF --