1、为了减轻后台压力，可以利用JavaScript在表单提交前对表单数据进行验证。
代码：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>Example1</title> <script type="text/javascript" src="jquery-1.10.2.min.js"></script> <script type="text/javascript"> function jump() { //清空表单所有数据 // document.getElementById("firstname").value="" // document.getElementById("lastname").value="" $("input[name=firstname]").val("") $("input[name=lastname]").val("") $("#firstnameLabel").text("") $("#lastnameLabel").text("") } $(document).ready(function(){ $("#form1").bind("submit", function(){ var txt_firstname = $.trim($("input[name=firstname]").val()) var txt_lastname = $.trim($("input[name=lastname]").val()) var isSuccess = 1; if(txt_firstname.length == 0) { $("#firstnameLabel").text("firstname不能为空！") $("#firstnameLabel").css({"color":"red"}); isSuccess = 0; } if(txt_lastname.length == 0) { $("#lastnameLabel").text("lastname不能为空！") $("#lastnameLabel").css({"color":"red"}); isSuccess = 0; } if(isSuccess == 0) { return false; } }) }) </script> </head> <body> 提交表单前进行验证(方法一) <hr width="40%" align="left" /> <form id="form1" method="post" action="/DealWithForm1/"> <table> <tr> <td>first_name:</td> <td><input name="firstname" type="text" /></td> <td><label id="firstnameLabel"></label></td> </tr> <tr> <td>last_name:</td> <td><input name="lastname" type="text" /></td> <td><label id="lastnameLabel"></label></td> </tr> </table> <hr width="40%" align="left" /> <button type="submit">提交</button> <button type="button" onclick="jump();">取消</button> </form> </body> </html>