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一些常用的表单验证的代码
<script language="JavaScript" src="js/jquery-1.9.1.min.js" type="text/javascript"></script>
//验证表单
function vailForm(){
var form = jQuery("#editForm");
if(!vailNickName())return;
if(!vailPhone())return;
if(!vailPwd())return;
if(!vailConfirmPwd())return;
if(!vailEmail())return;
if(!vailCode())return;
if(!vailAgree())return;
form.submit();
}
//验证昵称
function vailNickName(){
var nickName = jQuery("#nickName").val();
var flag = false;
var message = "";
var patrn=/^\d+$/;
var length = getNickNameLength();
if(nickName == ‘‘){
message = "昵称不能为空！";
}else if(length<4||length>16){
message = "昵称为4-16个字符！";
}else if(length==11&&patrn.test(password)){
message = "昵称不能为11位的纯数字！";
}else if(checkNickNameIsExist()){
message = "该昵称已经存在，请重新输入！";
}else{
flag = true;
}
if(!flag){
jQuery("#nickNameDiv").removeClass().addClass("ui-form-item has-error");
jQuery("#nickNameP").html("");
jQuery("#nickNameP").html("<i class=\"icon-error ui-margin-right10\"> <\/i>"+message);
//jQuery("#nickName").focus();
}else{
jQuery("#nickNameDiv").removeClass().addClass("ui-form-item has-success");
jQuery("#nickNameP").html("");
jQuery("#nickNameP").html("<i class=\"icon-success ui-margin-right10\"> <\/i>该昵称可用");
}
return flag;
}
//计算昵称长度
function getNickNameLength(){
var nickName = jQuery("#nickName").val();
var len = 0;
for (var i = 0; i < nickName.length; i++) {
var a = nickName.charAt(i);
//函数格式：stringObj.match(rgExp) stringObj为字符串必选 rgExp为正则表达式必选项
//返回值：如果能匹配则返回结果数组，如果不能匹配返回null
if (a.match(/[^\x00-\xff]/ig) != null){
len += 2;
}else{
len += 1;
}
}
return len;
}
//验证昵称是否存在
function checkNickNameIsExist(){
var nickName = jQuery("#nickName").val();
var flag = false;
jQuery.ajax(
{ url: "checkNickName?t=" + (new Date()).getTime(),
data:{nickName:nickName},
dataType:"json",
type:"GET",
async:false,
success:function(data) {
var status = data.status;
if(status == "1"){
flag = true;
}
}
});
return flag;
}
//验证密码
function vailPwd(){
var password = jQuery("#password").val();
var flag = false;
var message = "";
var patrn=/^\d+$/;
if(password ==‘‘){
message = "密码不能为空！";
}else if(password.length<6 || password.length>16){
message = "密码6-16位！";
}else if(patrn.test(password)){
message = "密码不能全是数字！";
}else{
flag = true;
}
if(!flag){
jQuery("#passwordDiv").removeClass().addClass("ui-form-item has-error");
jQuery("#passwordP").html("");
jQuery("#passwordP").html("<i class=\"icon-error ui-margin-right10\"> <\/i>"+message);
//jQuery("#password").focus();
}else{
jQuery("#passwordDiv").removeClass().addClass("ui-form-item has-success");
jQuery("#passwordP").html("");
jQuery("#passwordP").html("<i class=\"icon-success ui-margin-right10\"> <\/i>该密码可用");
}
return flag;
}
//验证确认密码
function vailConfirmPwd(){
var confirmPassword = jQuery("#confirm_password").val();
var patrn=/^\d+$/;
var password = jQuery("#password").val();
var flag = false;
var message = "";
if(confirmPassword == ‘‘){
message = "请输入确认密码！";
}else if(confirmPassword != password){
message = "二次密码输入不一致，请重新输入！";
}else if(patrn.test(password)){
message = "密码不能全是数字！";
}else {
flag = true;
}
if(!flag){
jQuery("#confirmPasswordDiv").removeClass().addClass("ui-form-item has-error");
jQuery("#confirmPasswordP").html("");
jQuery("#confirmPasswordP").html("<i class=\"icon-error ui-margin-right10\"> <\/i>"+message);
//jQuery("#confirm_password").focus();
}else{
jQuery("#confirmPasswordDiv").removeClass().addClass("ui-form-item has-success");
jQuery("#confirmPasswordP").html("");
jQuery("#confirmPasswordP").html("<i class=\"icon-success ui-margin-right10\"> <\/i>密码正确");
}
return flag;
}
//验证邮箱
function vailEmail(){
var email = jQuery("#email").val();
var flag = false;
var message = "";
var myreg = /^([\.a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/;
if(email ==‘‘){
message = "邮箱不能为空！";
}else if(!myreg.test(email)){
message = "请输入有效的邮箱地址！";
}else if(checkEmailIsExist()){
message = "该邮箱地址已经被注册！";
}else{
flag = true;
}
if(!flag){
jQuery("#emailDiv").removeClass().addClass("ui-form-item has-error");
jQuery("#emailP").html("");
jQuery("#emailP").html("<i class=\"icon-error ui-margin-right10\"> <\/i>"+message);
//jQuery("#email").focus();
}else{
jQuery("#emailDiv").removeClass().addClass("ui-form-item has-success");
jQuery("#emailP").html("");
jQuery("#emailP").html("<i class=\"icon-success ui-margin-right10\"> <\/i>该邮箱可用");
}
return flag;
}
//验证邮箱是否存在
function checkEmailIsExist(){
var email = jQuery("#email").val();
var flag = false;
jQuery.ajax(
{ url: "checkEmail?t=" + (new Date()).getTime(),
data:{email:email},
dataType:"json",
type:"GET",
async:false,
success:function(data) {
var status = data.status;
if(status == "1"){
flag = true;
}
}
});
return flag;
}
//验证验证码
function vailCode(){
var randCode = jQuery("#randCode").val();
var flag = false;
var message = "";
if(randCode == ‘‘){
message = "请输入验证码！";
}else if(!checkCode()){
message = "验证码不正确！";
}else{
flag = true;
}
if(!flag){
jQuery("#randCodeDiv").removeClass().addClass("ui-form-item has-error");
jQuery("#randCodeP").html("");
jQuery("#randCodeP").html("<i class=\"icon-error ui-margin-right10\"> <\/i>"+message);
//jQuery("#randCode").focus();
}else{
jQuery("#randCodeDiv").removeClass().addClass("ui-form-item has-success");
jQuery("#randCodeP").html("");
jQuery("#randCodeP").html("<i class=\"icon-success ui-margin-right10\"> <\/i>");
}
return flag;
}
//检查随机验证码是否正确
function checkCode(){
var randCode = jQuery("#randCode").val();
var flag = false;
jQuery.ajax(
{ url: "checkRandCode?t=" + (new Date()).getTime(),
data:{randCode:randCode},
dataType:"json",
type:"GET",
async:false,
success:function(data) {
var status = data.status;
if(status == "1"){
flag = true;
}
}
});
return flag;
}
//判断是否选中
function vailAgree(){
if(jQuery("#agree").is(":checked")){
return true;
}else{
alert("请确认是否阅读并同意XX协议");
}
return false;
}
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原文地址：http://www.cnblogs.com/liuhongfeng/p/4535051.html
