<script type="text/javascript"> function limitChars(id, count) { var obj = document.getElementById(id); if (obj.value.length > count) { obj.value = obj.value.substr(0, count); } } </script>
HTML代码:
<div> 内容:<br /> <textarea name="contid" runat="server" rows="2" cols="20" id="txtProcIdea" onkeydown="limitChars('txtProcIdea', 10)" onchange="limitChars('txtProcIdea',10)" style="height: 49px; 580px;"></textarea> </div>