<div class="htmlarea"> <textarea id="runcode64541"> function Round(a_Num , a_Bit) { return( Math.round(a_Num * Math.pow (10 , a_Bit)) / Math.pow(10 , a_Bit)) ; } </textarea><br><input onclick="runEx('runcode64541')" type="button" value="运行代码"> <input onclick="doCopy('runcode64541')" type="button" value="复制代码"> <input onclick="doSave(runcode64541)" type="button" value="保存代码">[Ctrl+A 全选 注:<a href="http://www.jb51.net/article/23421.htm" title="查看具体详情" target="_blank">如需引入外部Js需刷新才能执行</a>]</div>
