jquery validate 表单验证
使用 jquery.validate.js 进行表单验证，没有侵入性，简单方便。
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><%@ page contentType="text/html;charset=UTF-8" import="java.util.*" pageEncoding="UTF-8" language="java" %><% String path = request.getContextPath(); String basePath = request.getScheme() + "://" + request.getServerName() + "" + (request.getServerPort() == 80 ? "" : ":" + request.getServerPort()) + path + "/";%><html><head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>手动设置参数页面</title> <style type="text/css"> label { width:80px; display: inline-block; } em.error { width:300px; color:red; padding-left:10px; } </style> <script type="text/javascript" src="<%=basePath%>js/jquery-1.4.4.min.js"></script> <script type="text/javascript" src="<%=basePath%>js/jquery.validate.js"></script> <script type="text/javascript"> $(function() { $("#accyRFSalesSetting").validate({ messages: { weight: { required:"RF权重值必填", number:"必须是整数" }, sales: { required:"销量必填", number:"必须是整数" } }, rules: { weight: { required:true, number:true }, sales: { required:true, number:true } }, errorElement:"em" }); }); </script></head><body> <form id="accyRFSalesSetting" action="/setting" method="post" > <fieldset> <legend>手机推荐配件条件设置，顺序RF优先，其次销量</legend> <div> <label for="weight">RF >= </label> <input id="weight" type="text" name="weight" value="${weight}"/> </div> <div> <label for="sales">Sales >= </label> <input id="sales" type="text" name="sales" value="${sales}"/> </div> <div> <label></label> <input type="submit" value="提交"><input type="reset" value="重置"> </div> </fieldset> </form></body></html>?