JS表单验证的代码(常用)

<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+$/;
var length = getNickNameLength();
if(nickName == ''){
message = "昵称不能为空！";
}else if(length<4||length>16){
message = "昵称为4-16个字符！";
} else if(checkNickNameIsExist()){
message = "该昵称已经存在，请重新输入！";
}else{
flag = true;
}
if(!flag){
jQuery("#nickNameDiv").removeClass().addClass("ui-form-item has-error");
jQuery("#nickNameP").html("");
jQuery("#nickNameP").html("<i class=\"icon-error ui-margin-right10\">&nbsp;<\/i>"+message);
//jQuery("#nickName").focus();
}else{
jQuery("#nickNameDiv").removeClass().addClass("ui-form-item has-success");
jQuery("#nickNameP").html("");
jQuery("#nickNameP").html("<i class=\"icon-success ui-margin-right10\">&nbsp;<\/i>该昵称可用");
}
return flag;
}
//计算昵称长度
function getNickNameLength(){
var nickName = jQuery("#nickName").val();
var len = 0;
for (var i = 0; i < nickName.length; i++) {
var a = nickName.charAt(i);
　　　　　　//函数格式：stringObj.match(rgExp) stringObj为字符串必选 rgExp为正则表达式必选项
　　　　　　//返回值：如果能匹配则返回结果数组，如果不能匹配返回null
if (a.match(/[^\x00-\xff]/ig) != null){
len += 2;
}else{
len += 1;
}
}
return len;
}
//验证昵称是否存在
function checkNickNameIsExist(){
var nickName = jQuery("#nickName").val();
var flag = false;
jQuery.ajax(
{ url: "checkNickName?t=" + (new Date()).getTime(),
data:{nickName:nickName},
dataType:"json",
type:"GET",
async:false,
success:function(data) {
var status = data.status;
if(status == "1"){
flag = true;
}
}
});
return flag;
}
//验证手机号
function vailPhone(){
var phone = jQuery("#phone").val();
var flag = false;
var message = "";
//var myreg = /^(((13[0-9]{1})|159|153)+\d{8})$/;
var myreg = /^(((13[0-9]{1})|(14[0-9]{1})|(17[0-9]{1})|(15[0-3]{1})|(15[5-9]{1})|(18[0-3]{1})|(18[5-9]{1}))+\d{8})$/;
if(phone == ''){
message = "手机号码不能为空！";
}else if(phone.length !=11){
message = "请输入有效的手机号码！";
}else if(!myreg.test(phone)){
message = "请输入有效的手机号码！";
}else if(checkPhoneIsExist()){
message = "该手机号码已经被绑定！";
}else{
flag = true;
}
if(!flag){
jQuery("#phoneDiv").removeClass().addClass("ui-form-item has-error");
jQuery("#phoneP").html("");
jQuery("#phoneP").html("<i class=\"icon-error ui-margin-right10\">&nbsp;<\/i>"+message);
//jQuery("#phone").focus();
}else{
jQuery("#phoneDiv").removeClass().addClass("ui-form-item has-success");
jQuery("#phoneP").html("");
jQuery("#phoneP").html("<i class=\"icon-success ui-margin-right10\">&nbsp;<\/i>该手机号码可用");
}
return flag;
}
//验证手机号是否存在
function checkPhoneIsExist(){
var phone = jQuery("#phone").val();
var flag = true;
jQuery.ajax(
{ url: "checkPhone?t=" + (new Date()).getTime(),
data:{phone:phone},
dataType:"json",
type:"GET",
async:false,
success:function(data) {
var status = data.status;
if(status == "0"){
flag = false;
}
}
});
return flag;
}
//验证密码
function vailPwd(){
var password = jQuery("#password").val();
var flag = false;
var message = "";
var patrn=/^\d+$/;
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\">&nbsp;<\/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\">&nbsp;<\/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\">&nbsp;<\/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\">&nbsp;<\/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\">&nbsp;<\/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\">&nbsp;<\/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\">&nbsp;<\/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\">&nbsp;<\/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;
}
function delHtmlTag(str){ var str=str.replace(/<\/?[^>]*>/gim,"");//去掉所有的html标记 var result=str.replace(/(^\s+)|(\s+$)/g,"");//去掉前后空格 return result.replace(/\s/g,"");//去除文章中间空格}<!DOCTYPE html><html><body><h1>我的第一段 JavaScript</h1><p>请输入数字。如果输入值不是数字，浏览器会弹出提示框。</p><input id="demo" type="text"><script>function myFunction(){var x=document.getElementById("demo").value;if(x==""){ alert("输入不能为空"); return;}if(isNaN(x)){ alert("请输入数字"); return;}if(x.length!=6){ alert("请输入6位数字"); return;}}</script><button type="button" onclick="myFunction()">点击这里</button></body></html> 
//验证密码为数字字母下划线
function CheckPwd(pwd) {
var validStr = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_~/!@#$%^&*();-+.=,";
for (i = 0; i < pwd.length; i++) {
if (validStr.indexOf(pwd.charAt(i)) == -1) {
return false;
}
}
return true;
}
//验证邮箱格式
function checkemail(email) {
var filter = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
if (!filter.test(email)) {
return false;
}
return true;
}
function isEmail(val) {
return /^((([a-z]|\d|[!#\$%&'\*\+\-\/=\?\^_\`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+(\.([a-z]|\d|[!#\$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+)*)|((\x22)((((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(([\x01-\x08\x0b\x0c\x0e-\x1f\x7f]|\x21|[\x23-\x5b]|[\x5d-\x7e]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(\\([\x01-\x09\x0b\x0c\x0d-\x7f]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]))))*(((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(\x22)))@((([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.)+(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.?$/.test(val);
}
///手机号码验证
function checktelephone(cellPhone) {
var RegCellPhone = /^([0-9]{11})?$/;
falg = cellPhone.search(RegCellPhone);
if (falg == -1) {
return false;
} else {
return true;
}
}
//获取URL参数值
function getParameter(param) {
var query = window.location.search;
var iLen = param.length;
var iStart = query.indexOf(param);
if (iStart == -1)
return "";
iStart += iLen + 1;
var iEnd = query.indexOf("&", iStart);
if (iEnd == -1)
return query.substring(iStart);
return query.substring(iStart, iEnd);
}