JS form validation code (commonly used)

<script language="JavaScript" src="js/jquery-1.9." type="text/javascript"></script>
//Verification formfunction 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;
();
}
//Verify the nicknamefunction vailNickName(){
var nickName = jQuery("#nickName").val();
var flag = false;
var message = "";
var patrn=/^\d+$/;
var length = getNickNameLength();
if(nickName == ''){
message = "The nickname cannot be empty!";
}else if(length<4||length>16){
message = "Nickname 4-16 characters!";
} else if(checkNickNameIsExist()){
message = "The nickname already exists, please re-enter!";
}else{
flag = true;
}
if(!flag){
jQuery("#nickNameDiv").removeClass().addClass("ui-form-item has-error");
jQuery("#nickNameP").html("");
jQuery("#nickNameP").html("<i class=\"icon-error ui-margin-right10\"> <\/i>"+message);
//jQuery("#nickName").focus();
}else{
jQuery("#nickNameDiv").removeClass().addClass("ui-form-item has-success");
jQuery("#nickNameP").html("");
jQuery("#nickNameP").html("<i class=\"icon-success ui-margin-right10\">&nbsp;<\/i>This nickname is available");}
return flag;
}
//Calculate the nickname lengthfunction getNickNameLength(){
var nickName = jQuery("#nickName").val();
var len = 0;
for (var i = 0; i &lt; ; i++) {
var a = (i);
//Function format: (rgExp) stringObj is required for string rgExp is required for regular expression//Return value: If it can match, return the result array, return null if it cannot match.if ((/[^\x00-\xff]/ig) != null){
len += 2;
}else{
len += 1;
}
}
return len;
}
//Verify whether the nickname existsfunction checkNickNameIsExist(){
var nickName = jQuery("#nickName").val();
var flag = false;
(
{ url: "checkNickName?t=" + (new Date()).getTime(),
data:{nickName:nickName},
dataType:"json",
type:"GET",
async:false,
success:function(data) {
var status = ;
if(status == "1"){
flag = true;
}
}
});
return flag;
}
//Verify mobile phone numberfunction vailPhone(){
var phone = jQuery("#phone").val();
var flag = false;
var message = "";
//var myreg = /^(((13[0-9]{1})|159|153)+\d{8})$/;
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})$/;
if(phone == ''){
message = "The mobile phone number cannot be empty!";
}else if( !=11){
message = "Please enter a valid mobile phone number!";
}else if(!(phone)){
message = "Please enter a valid mobile phone number!";
}else if(checkPhoneIsExist()){
message = "The mobile phone number has been bound!";
}else{
flag = true;
}
if(!flag){
jQuery("#phoneDiv").removeClass().addClass("ui-form-item has-error");
jQuery("#phoneP").html("");
jQuery("#phoneP").html("&lt;i class=\"icon-error ui-margin-right10\"&gt;&amp;nbsp;&lt;\/i&gt;"+message);
//jQuery("#phone").focus();
}else{
jQuery("#phoneDiv").removeClass().addClass("ui-form-item has-success");
jQuery("#phoneP").html("");
jQuery("#phoneP").html("<i class=\"icon-success ui-margin-right10\">&nbsp;<\/i>This mobile phone number is available");}
return flag;
}
//Verify whether the mobile phone number existsfunction checkPhoneIsExist(){
var phone = jQuery("#phone").val();
var flag = true;
(
{ url: "checkPhone?t=" + (new Date()).getTime(),
data:{phone:phone},
dataType:"json",
type:"GET",
async:false,
success:function(data) {
var status = ;
if(status == "0"){
flag = false;
}
}
});
return flag;
}
//Verify passwordfunction vailPwd(){
var password = jQuery("#password").val();
var flag = false;
var message = "";
var patrn=/^\d+$/;
if(password ==''){
message = "The password cannot be empty!";
}else if(&lt;6 || &gt;16){
message = "Password 6-16 digits!";
}else if((password)){
message = "The password cannot be all numbers!";
}else{
flag = true;
}
if(!flag){
jQuery("#passwordDiv").removeClass().addClass("ui-form-item has-error");
jQuery("#passwordP").html("");
jQuery("#passwordP").html("&lt;i class=\"icon-error ui-margin-right10\"&gt;&amp;nbsp;&lt;\/i&gt;"+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>This password is available");}
return flag;
}
//Verify passwordfunction vailConfirmPwd(){
var confirmPassword = jQuery("#confirm_password").val();
var patrn=/^\d+$/;
var password = jQuery("#password").val();
var flag = false;
var message = "";
if(confirmPassword == ''){
message = "Please enter your confirmation password!";
}else if(confirmPassword != password){
message = "The input of the secondary password is inconsistent, please re-enter!";
}else if((password)){
message = "The password cannot be all numbers!";
}else {
flag = true;
}
if(!flag){
jQuery("#confirmPasswordDiv").removeClass().addClass("ui-form-item has-error");
jQuery("#confirmPasswordP").html("");
jQuery("#confirmPasswordP").html("&lt;i class=\"icon-error ui-margin-right10\"&gt;&amp;nbsp;&lt;\/i&gt;"+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>The password is correct");}
return flag;
}
//Verify the email addressfunction 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 = "The email cannot be empty!";
}else if(!(email)){
message = "Please enter a valid email address!";
}else if(checkEmailIsExist()){
message = "This email address has been registered!";
}else{
flag = true;
}
if(!flag){
jQuery("#emailDiv").removeClass().addClass("ui-form-item has-error");
jQuery("#emailP").html("");
jQuery("#emailP").html("&lt;i class=\"icon-error ui-margin-right10\"&gt;&amp;nbsp;&lt;\/i&gt;"+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>This mailbox is available");}
return flag;
}
//Verify whether the email existsfunction checkEmailIsExist(){
var email = jQuery("#email").val();
var flag = false;
(
{ url: "checkEmail?t=" + (new Date()).getTime(),
data:{email:email},
dataType:"json",
type:"GET",
async:false,
success:function(data) {
var status = ;
if(status == "1"){
flag = true;
}
}
});
return flag;
}
//Verify verification codefunction vailCode(){
var randCode = jQuery("#randCode").val();
var flag = false;
var message = "";
if(randCode == ''){
message = "Please enter the verification code!";
}else if(!checkCode()){
message = "The verification code is incorrect!";
}else{
flag = true;
}
if(!flag){
jQuery("#randCodeDiv").removeClass().addClass("ui-form-item has-error");
jQuery("#randCodeP").html("");
jQuery("#randCodeP").html("&lt;i class=\"icon-error ui-margin-right10\"&gt;&amp;nbsp;&lt;\/i&gt;"+message);
//jQuery("#randCode").focus();
}else{
jQuery("#randCodeDiv").removeClass().addClass("ui-form-item has-success");
jQuery("#randCodeP").html("");
jQuery("#randCodeP").html("&lt;i class=\"icon-success ui-margin-right10\"&gt;&amp;nbsp;&lt;\/i&gt;");
}
return flag;
}
//Check whether the random verification code is correctfunction checkCode(){
var randCode = jQuery("#randCode").val();
var flag = false;
(
{ url: "checkRandCode?t=" + (new Date()).getTime(),
data:{randCode:randCode},
dataType:"json",
type:"GET",
async:false,
success:function(data) {
var status = ;
if(status == "1"){
flag = true;
}
}
});
return flag;
}
//Judge whether to selectfunction vailAgree(){
if(jQuery("#agree").is(":checked")){
return true;
}else{
alert("Please confirm whether to read and agree to the XX Agreement");
}
return false;
}
function delHtmlTag(str){ var str=(/&lt;\/?[^&gt;]*&gt;/gim,"");//Remove all html tags var result=(/(^\s+)|(\s+$)/g,"");//Remove the front and back spaces return (/\s/g,"");//Remove the middle spaces in the article}<!DOCTYPE html><html><body><h1>My first paragraph JavaScript</h1><p>Please enter numbers.  If the input value is not a number, the browser will pop up a prompt box.  </p><input type="text"><script>function myFunction(){var x=("demo").value;if(x==""){ alert("Input cannot be empty"); return;}if(isNaN(x)){ alert("Please enter number"); return;}if(!=6){ alert("Please enter 6 digits"); return;}}</script><button type="button" onclick="myFunction()">Click here</button></body></html>//The verification password is underlined by the numeric letterfunction CheckPwd(pwd) {
var validStr = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_~/!@#$%^&amp;*();-+.=,";
for (i = 0; i &lt; ; i++) {
if (((i)) == -1) {
return false;
}
}
return true;
}
//Verify the mailbox formatfunction checkemail(email) {
var filter = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
if (!(email)) {
return false;
}
return true;
}
function isEmail(val) {
return /^((([a-z]|\d|[!#\$%&amp;'\*\+\-\/=\?\^_\`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+(\.([a-z]|\d|[!#\$%&amp;'\*\+\-\/=\?\^_`{\|}~]|[\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])))\.?$/.test(val);
}
///Mobile phone number verificationfunction checktelephone(cellPhone) {
var RegCellPhone = /^([0-9]{11})?$/;
falg = (RegCellPhone);
if (falg == -1) {
return false;
} else {
return true;
}
}
//Get URL parameter valuefunction getParameter(param) {
var query = ;
var iLen = ;
var iStart = (param);
if (iStart == -1)
return "";
iStart += iLen + 1;
var iEnd = ("&amp;", iStart);
if (iEnd == -1)
return (iStart);
return (iStart, iEnd);
}