javascript兑现的表单验证
日期：2014-05-16 浏览次数：20360 次
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
? <head>
??<style type="text/css">
???span{
????color:red;
???}
??</style>
??<script type="text/javascript">
???function check(frm)
???{
????/*?\s-- 用户输入的空格 制表符 换行符 空白字符等其中的一个 这些都匹配
????*?? $-- 字符串结束的地方匹配
????*?/g 全局匹配 也就是，每个地方都匹配
????*?? \w a--z A---Z 之间 0---9之间都匹配
????*??? \d 任意数字? 0---9之间的任意数字
????*/
????
????var uname=frm.username.value.replace(/(^\s+)|(\s+$)/g,"");
????var flag = true;
????document.getElementById("unameMsg").innerHTML="";
????document.getElementById("pwdMsg").innerHTML="";
????document.getElementById("pwdMsg2").innerHTML="";
????document.getElementById("ageMsg").innerHTML="";
????document.getElementById("phoneMsg").innerHTML="";
????document.getElementById("emailMsg").innerHTML="";
????//用户名的验证
????if(uname.length == 0)
????{
?????document.getElementById("unameMsg").innerHTML="用户名不能为空";
?????flag = false;
?????}
????else if(uname.length <=5||uname.length >=10)
????{
??????document.getElementById("unameMsg").innerHTML="用户名的长度必须是5-10位"
???????flag = false;
?????}
????else{
??????if(!(/^\w+$/.test(uname))){
????????document.getElementById("unameMsg").innerHTML="用户名格式必须是字母数字下划线";
????????flag = false;
???????}
?????}
????//密码的验证
????var pwd = frm.pwd.value.replace(/(^\s+)|(\s+$)/g,"");
????if(pwd.length == 0)
????{
?????document.getElementById("pwdMsg").innerHTML="密码不能为空";
?????flag = false;
????}
????else if(pwd.length <= 5||pwd.length >=15){
??????document.getElementById("pwdMsg").innerHTML="密码长度必须是5到15位";
??????flag = false;
???????}
????else{
?????if(!(/^\w+$/.test(pwd))){
??????document.getElementById("pwdMsg").innerHTML="密码必须是字母数字下划线";
??????flag = false;
?????}
?????}
????//确认密码的验证
????var pwd2=frm.pwd2.value.replace(/(^\s+)|(\s+$)/g,"")
????if(pwd2.length == 0)
????{
??????document.getElementById("pwdMsg2").innerHTML="确认密码不能为空";
??????flag = false;
?????}
????else if(pwd2.length <=5||pwd2.length >=15)
??????{
????????document.getElementById("pwdMsg2").innerHTML="确认密码的长度必须是5-15位";
????????flag=false;
??????}
????else {
??????if(!(/^\w+$/.test(pwd2)))
??????{
???????document.getElementById("pwdMsg2").innerHTML="确认密码的格式必须是字母数字下划线";
???????flag = false;
???????}
?????}
????//判断2次输入的密码是否正确
????if(pwd!=pwd2)
????{
?????document.getElementById("pwdMsg2").innerHTML="两次输入的密码不一致,请重新输入";
?????flag = false;
?????}
????/*
????//验证性别
?????if(!sex[0].checked && !sex[1].checked)
?????{
??????alert("请选择性别");
??????flag = false;
??????}
??????*/
????//判断年龄 并且位数介于 1--3位之间
????var age = frm.age.value.replace(/(^\s+)|(\s+$)/g,"");
????if(age.length == 0)
????{
?????document.getElementById("ageMsg").innerHTML="年龄不能为空!";
?????flag = false;
?????}
????else if(age < 1||age > 200)
????{
??????document.getElementById("ageMsg").innerHTML="年龄必须是介于1到200之间";
??????flag = false;
?????}
????else{
??????if(!(/^([0-9]\d+|[0-9])$/.test(age))){
????????document.getElementById("ageMsg").innerHTML="年龄不能超过3位数或者不是数字";
????????flag =? false;
???????}
?????}
???//验证手机电话号码
???var phone=frm.phone.value.replace(/(s+)|(s+$)/g,"");
????if(phone.length == 0)
????{
?????document.getElementById("phoneMsg").innerHTML="电话号码不能为空";
?????flag = false;??
????}
????else if((phone < 1 && phone > 11))
????{
?????document.getElementById("phoneMsg").innerHTML="电话号码的长度必须是11位";
??
