如何使用JQuery来验证电子邮件地址?

当前回答

这将执行更彻底的验证，例如它检查用户名中的连续点，例如john..doe@example.com

function isValidEmail(email)
{
    return /^[a-z0-9]+([-._][a-z0-9]+)*@([a-z0-9]+(-[a-z0-9]+)*\.)+[a-z]{2,4}$/.test(email)
        && /^(?=.{1,64}@.{4,64}$)(?=.{6,100}$).*/.test(email);
}

请参阅JavaScript中使用正则表达式验证电子邮件地址。

2013-10-12 06:28:32

其他回答

<!-- Dont forget to include the jQuery library here -->
<script type="text/javascript" src="jquery-1.3.2.min.js"></script>
<script type="text/javascript">

$(document).ready(function() {

    $("#validate").keyup(function(){

        var email = $("#validate").val();

        if(email != 0)
        {
            if(isValidEmailAddress(email))
            {
                $("#validEmail").css({
                    "background-image": "url('validYes.png')"
                });
            } else {
                $("#validEmail").css({
                    "background-image": "url('validNo.png')"
                });
            }
        } else {
            $("#validEmail").css({
                "background-image": "none"
            });         
        }

    });

});

function isValidEmailAddress(emailAddress) {
    var pattern = new RegExp(/^(("[\w-\s]+")|([\w-]+(?:\.[\w-]+)*)|("[\w-\s]+")([\w-]+(?:\.[\w-]+)*))(@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$)|(@\[?((25[0-5]\.|2[0-4][0-9]\.|1[0-9]{2}\.|[0-9]{1,2}\.))((25[0-5]|2[0-4][0-9]|1[0-9]{2}|[0-9]{1,2})\.){2}(25[0-5]|2[0-4][0-9]|1[0-9]{2}|[0-9]{1,2})\]?$)/i);
    return pattern.test(emailAddress);
}

</script>

<style>
    #validEmail
    {
        margin-top: 4px;
        margin-left: 9px;
        position: absolute;
        width: 16px;
        height: 16px;
    }

    .text
    {
        font-family: Arial, Tahoma, Helvetica;
    }
</style>

    <title>Live Email Validation with jQuery Demo</title>
</head>
<body>
    <div class="text"><h1>Reynoldsftw.com - Live Email Validation</h1><h2>Type in an email address in the box below:</h2></div>
    <div><input type="text" id="validate" width="30"><span id="validEmail"></span></div>
    <div class="text"><P>More script and css style

: www.htmldrive.net

来源:htmldrive.com

2013-09-03 18:56:08

http://so.devilmaycode.it/jquery-validate-e-mail-address-regex/ 使用新的正则表达式增加了对地址标签(+号)的支持

if( !isValidEmailAddress( emailaddress ) ) { /* do stuff here (email is invalid) */ }

这是由用户Luca Filosofi提供的答案

2016-12-09 14:30:51

这个regexp可以防止重复的域名，比如abc@abc.com.com.com.com，它只允许域名两次，比如abc@abc.co.in。它也不允许从123abc@abc.com这样的数字启动

 regexp: /^([a-zA-Z])+([a-zA-Z0-9_.+-])+\@(([a-zA-Z])+\.+?(com|co|in|org|net|edu|info|gov|vekomy))\.?(com|co|in|org|net|edu|info|gov)?$/,

万事如意!!!!!

2015-11-03 08:53:31

function validateEmail(emailaddress){  
   var emailReg = /^([\w-\.]+@([\w-]+\.)+[\w-]{2,4})?$/;  
   if(!emailReg.test(emailaddress)) {  
        alert("Please enter valid email id");
   }       
}

2011-11-04 06:01:36

我从jqvalidate版本1.11.0中获得这段代码，并在版本1.16.0中作为另一个方法实现。它的工作原理

            jQuery.validator.addMethod("strictemail", function(value, element) {
                    var valid = /^((([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.test(value);
                    return valid;
                }, "Escribe un correo v\u00e1lido"
            );

在电子邮件规则中

            'correo': {
                required: 'Por favor ingresa tu correo',
                email: 'Escribe un correo v\u00e1lido',
                strictemail:'Escribe un correo v\u00e1lido'
            }

2017-05-17 15:37:26

如何使用JQuery来验证电子邮件地址?

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