提交表单的技巧

来源：互联网发布：剑三pvp鼠标宏编程编辑：程序博客网时间：2024/05/19 18:13

<%@ page language="java" contentType="text/html; charset=UTF-8"    pageEncoding="UTF-8"%><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Insert title here</title><style>    .form{        width: 400px;        height: 300px;        margin: 0 auto;    }    legend{        border: 1px solid #000;        padding: 4px;    }</style></head><body>    <form class="form" action="" onsubmit="return checkdata()">        <legend>个人信息注册表</legend>        <p>请输入一个数字：<input type="text" name="num"></p>        <p>请输入电子邮件<input type="text" name="email"></p>        <input type="submit" value="提交">    </form></body><script>    function checkdata(){        //检查是否为数字        var num=document.forms[0].num.value;        if(num.search("^\\d+(\\.\\d+)*$")!=0){            alert("请输入一个数字！");            document.forms[0].num.select();            return false;        }    }</script></html>

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