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JQuery 验证电子邮件地址正则表达式
嗨，我有一个引用电子邮件输入字段的表单中的输入，当用户单击提交按钮时，我想确保电子邮件输入字段值具有这样的正式形式
example@hotmail.com
或
example@gmail.com
或
example@yahoo.com
输入字段是这个
<p>
<label>Email</label>
<input type="text" name="Email"/>
<span class="errorMessage"></span>
</p>
j查询代码
$(document).ready(function(){
$('#suform').on('submit', function(e){
e.preventDefault();
var errorCount = 0;
$('span.errorMessage').text(''); // reset all error mesaage
$('input').each(function(){
var $this = $(this);
if($this.val() === ''){
var error = 'Please fill ' + $this.prev('label').text(); // take the input field from label
$this.next('span').text(error);
errorCount = errorCount + 1;
}
});
if(errorCount === 0){
var mobileNumber = $('input[name=MNumber]');
var email = $('input[name=Email]');
if(isNaN(parseFloat(mobileNumber )) && !isFinite(mobileNumber )) {
var error = 'Mobile number incorect.';
$('input[name=MNumber]').next('span').text(error);
errorCount = errorCount + 1;
}else{
var password= $('input[name="Password"]').val();
var repass= $('input[name="RePassword"]').val();
if(password!=repass){ // ensrue the two passwords are the same
var error2 = 'Password not matching';
$('input[name="RePassword"]').next('span').text(error2)
errorCount = errorCount + 1;
}else{
$(this)[0].submit(); // submit form if no error
}
}
}
});
});
我的 HTML、CSS 和 jQuery 代码在这里code
如果我理解正确，您想验证表格上填写的电子邮件地址：
添加到您的函数
// validate proper email address
var reg = /^((([a-z]|'d|[!#'$%&''*'+'-'/='?'^_`{'|}~]|['u00A0-'uD7FF'uF900-'uFDCF'uFDF0-'uFFEF])+('.([a-z]|'d|[!#'$%&''*'+'-'/='?'^_`{'|}~]|['u00A0-'uD7FF'uF900-'uFDCF'uFDF0-'uFFEF])+)*)|(('x22)(((('x20|'x09)*('x0d'x0a))?('x20|'x09)+)?((['x01-'x08'x0b'x0c'x0e-'x1f'x7f]|'x21|['x23-'x5b]|['x5d-'x7e]|['u00A0-'uD7FF'uF900-'uFDCF'uFDF0-'uFFEF])|(''(['x01-'x09'x0b'x0c'x0d-'x7f]|['u00A0-'uD7FF'uF900-'uFDCF'uFDF0-'uFFEF]))))*((('x20|'x09)*('x0d'x0a))?('x20|'x09)+)?('x22)))@((([a-z]|'d|['u00A0-'uD7FF'uF900-'uFDCF'uFDF0-'uFFEF])|(([a-z]|'d|['u00A0-'uD7FF'uF900-'uFDCF'uFDF0-'uFFEF])([a-z]|'d|-|'.|_|~|['u00A0-'uD7FF'uF900-'uFDCF'uFDF0-'uFFEF])*([a-z]|'d|['u00A0-'uD7FF'uF900-'uFDCF'uFDF0-'uFFEF])))'.)+(([a-z]|['u00A0-'uD7FF'uF900-'uFDCF'uFDF0-'uFFEF])|(([a-z]|['u00A0-'uD7FF'uF900-'uFDCF'uFDF0-'uFFEF])([a-z]|'d|-|'.|_|~|['u00A0-'uD7FF'uF900-'uFDCF'uFDF0-'uFFEF])*([a-z]|['u00A0-'uD7FF'uF900-'uFDCF'uFDF0-'uFFEF])))'.?$/i;
if (reg.test(value) == false) {
// email invalid, do stuff
} else {
// email valid, do stuff
}
此正则表达式检查提供的电子邮件以解决许多许多问题！
编辑：
你的功能有一些错别字，这里是功能齐全的：和一个工作的小提琴！
$(document).ready(function(){
// form submit
$('#suform').on('submit', function(e){
// prevent default behavior
e.preventDefault();
// reset errors counter
var errorCount = 0;
// clear error message
$('span.errorMessage').text('');
// run by each input field to check if they are filled
$('input').each(function(){
var $this = $(this);
if($this.val() === ''){
// take the input field from label
var error = 'Please fill ' + $this.prev('label').text();
$this.next('span').text(error);
errorCount = errorCount + 1;
}
});
// no errors so far, let continue and validate the contents
if(errorCount === 0){
// get mobile number
var mobileNumber = $('input[name=MNumber]').val();
// get email address
var email = $('input[name=Email]').val();
// get password and password repeat
var password= $('input[name="Password"]').val();
var repass= $('input[name="RePassword"]').val();
// regular expression to validate the email address
var reg = /^((([a-z]|'d|[!#'$%&''*'+'-'/='?'^_`{'|}~]|['u00A0-'uD7FF'uF900-'uFDCF'uFDF0-'uFFEF])+('.([a-z]|'d|[!#'$%&''*'+'-'/='?'^_`{'|}~]|['u00A0-'uD7FF'uF900-'uFDCF'uFDF0-'uFFEF])+)*)|(('x22)(((('x20|'x09)*('x0d'x0a))?('x20|'x09)+)?((['x01-'x08'x0b'x0c'x0e-'x1f'x7f]|'x21|['x23-'x5b]|['x5d-'x7e]|['u00A0-'uD7FF'uF900-'uFDCF'uFDF0-'uFFEF])|(''(['x01-'x09'x0b'x0c'x0d-'x7f]|['u00A0-'uD7FF'uF900-'uFDCF'uFDF0-'uFFEF]))))*((('x20|'x09)*('x0d'x0a))?('x20|'x09)+)?('x22)))@((([a-z]|'d|['u00A0-'uD7FF'uF900-'uFDCF'uFDF0-'uFFEF])|(([a-z]|'d|['u00A0-'uD7FF'uF900-'uFDCF'uFDF0-'uFFEF])([a-z]|'d|-|'.|_|~|['u00A0-'uD7FF'uF900-'uFDCF'uFDF0-'uFFEF])*([a-z]|'d|['u00A0-'uD7FF'uF900-'uFDCF'uFDF0-'uFFEF])))'.)+(([a-z]|['u00A0-'uD7FF'uF900-'uFDCF'uFDF0-'uFFEF])|(([a-z]|['u00A0-'uD7FF'uF900-'uFDCF'uFDF0-'uFFEF])([a-z]|'d|-|'.|_|~|['u00A0-'uD7FF'uF900-'uFDCF'uFDF0-'uFFEF])*([a-z]|['u00A0-'uD7FF'uF900-'uFDCF'uFDF0-'uFFEF])))'.?$/i;
// try to validate the email
if (reg.test(email) == false) {
$('input[name=Email]').next('span').text('Email address is invalid!');
errorCount = errorCount + 1;
} else {
if(isNaN(parseFloat(mobileNumber )) && !isFinite(mobileNumber )) {
var error = 'Mobile number incorect.';
$('input[name=MNumber]').next('span').text(error);
errorCount = errorCount + 1;
} else {
// ensrue the two passwords are the same
if(password!=repass){
var error2 = 'Password not matching';
$('input[name="RePassword"]').next('span').text(error2);
errorCount = errorCount + 1;
}else{
$(this)[0].submit(); // submit form if no error
}
}
}
}
});
});
正则表达式是验证的一种方法：
function validateEmail(email) {
var re = /^(([^<>()[']''.,;:'s@'"]+('.[^<>()[']''.,;:'s@'"]+)*)|('
".+'"))@(('[[0-9]{1,3}'.[0-9]{1,3}'.[0-9]{1,3}'.[0-9]{1,3}'])|(([a-zA
-Z'-0-9]+'.)+[a-zA-Z]{2,}))$/;
return re.test(email);
}
将用户输入的电子邮件传递给此函数，它将检查其格式并相应地返回 true 或 false
您可以使用此函数：
function validateEmail(email) {
var emailReg = /^(['w-'.]+@(['w-]+'.)+['w-]{2,4})?$/;
if( !emailReg.test( email ) ) {
return false;
} else {
return true;
}
}