电子邮件验证jQuery [重复]

Question

可能重复：
JQuery validate e-mail address regex

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格式

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>

jquery 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

Answer 1

你可以使用这个功能：

function validateEmail(email) {
    var emailReg = /^([\w-\.]+@([\w-]+\.)+[\w-]{2,4})?$/;
    if( !emailReg.test( email ) ) {
        return false;
    } else {
        return true;
    }
}

Answer 2

正则表达式是一种验证方式：

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真或假

Answer 3

如果我理解正确，您想验证表单上填写的电子邮件地址：

添加到您的功能中

// 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！

已编辑：

你的函数有一些拼写错误，这里是完整的：和working Fiddle!

$(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
                    }
                }
            }
        }
    });
});