js常用表单验证

//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
}

//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);
}

摘至
http://www.cnblogs.com/liuhongfeng/p/4535051.html