引用文件:    <script src=”/TextTip/TextTip.js” type=”text/javascript”></script> 一.textarea的字数提示: $(“#Educational_PracticeExperience”).bindShowTextTip({“content”: “请填写您的校内外实践,所获奖项和心得体会等”, “maxLength”: “500″ }); 参数说明:content:提示内容   maxLength:限制长度 1.