Php 我正在尝试验证表单上的电子邮件字段
大家好,请帮我解决我的问题。实际上,我正在尝试使用javascript验证表单上的电子邮件字段,并发布一个ajax请求,以检查该电子邮件是否存在,但我的javascript函数不会等到ajax响应并且每次都返回false。当电子邮件不存在时,我希望返回truePhp 我正在尝试验证表单上的电子邮件字段,php,jquery,ajax,Php,Jquery,Ajax,大家好,请帮我解决我的问题。实际上,我正在尝试使用javascript验证表单上的电子邮件字段,并发布一个ajax请求,以检查该电子邮件是否存在,但我的javascript函数不会等到ajax响应并且每次都返回false。当电子邮件不存在时,我希望返回true $(document).ready(function(){ //global vars var form = $("#signupForm"); var email = $("#email"); v
$(document).ready(function(){
//global vars
var form = $("#signupForm");
var email = $("#email");
var email_error = $("#invalid");
//On blur
// userEmail.blur(validateEmail);
//On Submitting
form.submit(function(){
if(validateEmail()){
alert("submit true");
return true;
}else{
alert("submit false");
return false;
}
});
function validateEmail(){
//if it's NOT valid
alert("In email");
var a = $("#email").val();
var filter = /^[a-zA-Z0-9]+[a-zA-Z0-9_.-]+[a-zA-Z0-9_-]+@[a-zA-Z0-9]+[a-zA-Z0-9.-]+[a-zA-Z0-9]+.[a-z]{2,4}$/;
if(email.val() == ""){
email_error.html("Please enter your email ");
return false;
}
//if it's valid email
else if(filter.test(a)==false){
email_error.html("Please enter Valid email address");
return false;
}
else if(filter.test(a)==true){alert("elseif");
var baseUrl = '<?= base_url() ?>';
$.ajax({
type: "POST",
url: baseUrl+"index.php/index/validateUserEmail",
data: "useremail="+$("#email").val(),
success: function(msg){
alert(msg);
if(msg == "1")
{
$("#tick_cross").fadeIn("slow").html('<img src="'+baseUrl+'images/cross.png" />');
$("#emailValidate").val("1");
email_error.html("This email-Id already exists!");
return false;
}
else
{
$("#tick_cross").fadeIn("slow").html('<img src="'+baseUrl+'images/tick.png" />');
$("#emailValidate").val("0");
email_error.html(" ");
alert("alok");
return true;
}
}
});
}
else{
email_error.html(" ");
return true;
}
}
});
$(文档).ready(函数(){
//全局变量
变量形式=$(“#注册形式”);
var email=$(“#email”);
var email_error=$(“#无效”);
//关于模糊
//blur(validateEmail);
//提交时
表单提交(函数(){
if(validateEmail()){
警告(“提交真实”);
返回true;
}否则{
警告(“提交错误”);
返回false;
}
});
函数validateEmail(){
//如果它是无效的
警报(“在电子邮件中”);
var a=$(“#email”).val();
var过滤器=/^[a-zA-Z0-9]+[a-zA-Z0-9.-]+[a-zA-Z0-9.-]+[a-zA-Z0-9]+[a-zA-Z0-9.+[a-zA-Z0-9]+[a-z]{2,4}$/;
如果(email.val()==“”){
email_error.html(“请输入您的电子邮件”);
返回false;
}
//如果它是有效的电子邮件
else if(filter.test(a)=false){
email_error.html(“请输入有效的电子邮件地址”);
返回false;
}
else if(filter.test(a)=true){alert(“elseif”);
var baseUrl='';
$.ajax({
类型:“POST”,
url:baseUrl+“index.php/index/validateUserEmail”,
数据:“useremail=“+$(“#email”).val(),
成功:功能(msg){
警报(msg);
如果(消息==“1”)
{
$(“#勾号“).fadeIn(“slow”).html(“”);
$(“#emailValidate”).val(“1”);
email_error.html(“此电子邮件Id已存在!”);
返回false;
}
其他的
{
$(“#勾号“).fadeIn(“slow”).html(“”);
$(“#emailValidate”).val(“0”);
电子邮件_error.html(“”);
警报(“警报”);
返回true;
}
}
});
}
否则{
电子邮件_error.html(“”);
返回true;
}
}
});
试试下面的方法
$(document).ready(function() {
// global vars
var form = $("#signupForm");
var email = $("#email");
var email_error = $("#invalid");
// On blur
// userEmail.blur(validateEmail);
// On Submitting
form.submit(function() {
validateEmail(function(flag) {
if (flag) {
alert("submit true");
form[0].submit();
} else {
alert("submit false");
}
});
return false;
});
function validateEmail(callback) {
// if it's NOT valid
alert("In email");
var a = $("#email").val();
var filter = /^[a-zA-Z0-9]+[a-zA-Z0-9_.-]+[a-zA-Z0-9_-]+@[a-zA-Z0-9]+[a-zA-Z0-9.-]+[a-zA-Z0-9]+.[a-z]{2,4}$/;
if (email.val() == "") {
email_error.html("Please enter your email ");
callback(false);
}
// if it's valid email
else if (filter.test(a) == false) {
email_error.html("Please enter Valid email address");
callback(false);
} else if (filter.test(a) == true) {
alert("elseif");
var baseUrl = '<?= base_url() ?>';
$.ajax({
type : "POST",
url : baseUrl + "index.php/index/validateUserEmail",
data : "useremail=" + $("#email").val(),
success : function(msg) {
alert(msg);
if (msg == "1") {
$("#tick_cross").fadeIn("slow")
.html('<img src="' + baseUrl
+ 'images/cross.png" />');
$("#emailValidate").val("1");
email_error
.html("This email-Id already exists!");
callback(false);
} else {
$("#tick_cross").fadeIn("slow")
.html('<img src="' + baseUrl
+ 'images/tick.png" />');
$("#emailValidate").val("0");
email_error.html(" ");
alert("alok");
callback(true);
}
}
});
}
else {
email_error.html(" ");
callback(true);
}
}
});
$(文档).ready(函数(){
//全局变量
变量形式=$(“#注册形式”);
var email=$(“#email”);
var email_error=$(“#无效”);
//关于模糊
//blur(validateEmail);
//提交时
表单提交(函数(){
validateEmail(函数(标志){
国际单项体育联合会(旗){
警告(“提交真实”);
表单[0]。提交();
}否则{
警告(“提交错误”);
}
});
返回false;
});
函数validateEmail(回调){
//如果它是无效的
警报(“在电子邮件中”);
var a=$(“#email”).val();
var过滤器=/^[a-zA-Z0-9]+[a-zA-Z0-9.-]+[a-zA-Z0-9.-]+[a-zA-Z0-9]+[a-zA-Z0-9.+[a-zA-Z0-9]+[a-z]{2,4}$/;
如果(email.val()==“”){
email_error.html(“请输入您的电子邮件”);
回调(假);
}
//如果它是有效的电子邮件
else if(filter.test(a)=false){
email_error.html(“请输入有效的电子邮件地址”);
回调(假);
}else if(filter.test(a)=true){
警报(“elseif”);
var baseUrl='';
$.ajax({
类型:“POST”,
url:baseUrl+“index.php/index/validateUserEmail”,
数据:“useremail=“+$(“#email”).val(),
成功:功能(msg){
警报(msg);
如果(消息==“1”){
美元(“#勾号“)。法代因(“慢”)
.html(“”);
$(“#emailValidate”).val(“1”);
电子邮件错误
.html(“此电子邮件Id已存在!”);
回调(假);
}否则{
美元(“#勾号“)。法代因(“慢”)
.html(“”);
$(“#emailValidate”).val(“0”);
电子邮件_error.html(“”);
警报(“警报”);
回调(true);
}
}
});
}
否则{
电子邮件_error.html(“”);
回调(true);
}
}
});
演示:
还是更好的解决方案
$(文档).ready(函数(){
//全局变量
变量形式=$(“#注册形式”);
var email=$(“#email”);
var email_error=$(“#无效”);
//关于模糊
//blur(validateEmail);
//提交时
表单提交(函数(){
validateEmail().done(函数()){
控制台日志(“提交为真”);
表单[0]。提交();
}).fail(函数(){
控制台日志(“提交错误”);
});
返回false;
});
函数validateEmail(){
var deferred=jQuery.deferred()
//如果它是无效的
控制台。登录(“电子邮件”);
var a=$(“#email”).val();
var过滤器=/^[a-zA-Z0-9]+[a-zA-Z0-9.-]+[a-zA-Z0-9.-]+[a-zA-Z0-9]+[a-zA-Z0-9.-]+[a-zA-Z
$(document).ready(function() {
// global vars
var form = $("#signupForm");
var email = $("#email");
var email_error = $("#invalid");
// On blur
// userEmail.blur(validateEmail);
// On Submitting
form.submit(function() {
validateEmail().done(function() {
console.log("submit true");
form[0].submit();
}).fail(function() {
console.log("submit false");
});
return false;
});
function validateEmail() {
var deferred = jQuery.Deferred()
// if it's NOT valid
console.log("In email");
var a = $("#email").val();
var filter = /^[a-zA-Z0-9]+[a-zA-Z0-9_.-]+[a-zA-Z0-9_-]+@[a-zA-Z0-9]+[a-zA-Z0-9.-]+[a-zA-Z0-9]+.[a-z]{2,4}$/;
if (email.val() == "") {
email_error.html("Please enter your email ");
deferred.reject();
}
// if it's valid email
else if (filter.test(a) == false) {
email_error.html("Please enter Valid email address");
deferred.reject();
} else if (filter.test(a) == true) {
console.log("elseif");
var baseUrl = '<?= base_url() ?>';
$.ajax({
type : "POST",
url : baseUrl + "index.php/index/validateUserEmail",
data : "useremail=" + $("#email").val(),
success : function(msg) {
alert(msg);
if (msg == "1") {
$("#tick_cross").fadeIn("slow")
.html('<img src="' + baseUrl
+ 'images/cross.png" />');
$("#emailValidate").val("1");
email_error
.html("This email-Id already exists!");
deferred.reject();
} else {
$("#tick_cross").fadeIn("slow")
.html('<img src="' + baseUrl
+ 'images/tick.png" />');
$("#emailValidate").val("0");
email_error.html(" ");
console.log("alok");
deferred.resolve();
}
}
});
}
else {
email_error.html(" ");
deferred.resolve();
}
return deferred.promise();
}
});
$(function(){
$('#submitButton').click(validateEmail)
})
function validateEmail(){
//if it's NOT valid
alert("In email");
var a = $("#email").val();
var filter = /^[a-zA-Z0-9]+[a-zA-Z0-9_.-]+[a-zA-Z0-9_-]+@[a-zA-Z0-9]+[a-zA-Z0-9.-]+[a-zA-Z0-9]+.[a-z]{2,4}$/;
if(email.val() == ""){
email_error.html("Please enter your email ");
return false;
}
//if it's valid email
else if(filter.test(a)==false){
email_error.html("Please enter Valid email address");
return false;
}
else if(filter.test(a)==true){alert("elseif");
var baseUrl = '<?= base_url() ?>';
$.ajax({
type: "POST",
url: baseUrl+"index.php/index/validateUserEmail",
data: "useremail="+$("#email").val(),
success: function(msg){
alert(msg);
if(msg == "1")
{
$("#tick_cross").fadeIn("slow").html('<img src="'+baseUrl+'images/cross.png" />');
$("#emailValidate").val("1");
email_error.html("This email-Id already exists!");
return false;
}
else
{
$("#tick_cross").fadeIn("slow").html('<img src="'+baseUrl+'images/tick.png" />');
$("#emailValidate").val("0");
email_error.html(" ");
alert("alok");
$("#signupForm").submit() // <--- HERE
return true;
}
}
});
}
else{
email_error.html(" ");
return true;
}
}
$.ajax({
type: "POST",
url: baseUrl+"index.php/index/validateUserEmail",
data: "useremail="+$("#email").val(),
success: function(){
}).done(function (msg) {
alert(msg);
if(msg == "1")
{
$("#tick_cross").fadeIn("slow").html('<img src="'+baseUrl+'images/cross.png" />');
$("#emailValidate").val("1");
email_error.html("This email-Id already exists!");
return false;
}
else
{
$("#tick_cross").fadeIn("slow").html('<img src="'+baseUrl+'images/tick.png" />');
$("#emailValidate").val("0");
email_error.html(" ");
alert("alok");
return true;
}
}
})
.fail(function() { alert("error";
return true;
); });