我如何在JavaScript中验证电子邮件地址?

我想检查用户输入是否是JavaScript的电子邮件地址,然后将其发送到服务器或试图发送电子邮件,以防止最基本的误解。

当前回答

這些將與上使用的電子郵件(他們正確相匹配每個規則)。Gmail /^[a-z](?!\.\.)([a-z\.])){4,28}[a-z0-9]@gmail.com$/i Yahoo /^[a-z](?!\.\.)([w\.])){3,30}[w]@yahoo.com$/i Outlook/Hotmail /[a-z](?!\.\.)([w\.])){0,62}[w]@(outlook.com♰hotmail.com)$/i

2019-11-17 22:22:24

其他回答

如果你正在使用NG模式和材料,这就是工作。

vm.validateEmail = '([a-zA-Z0-9_.]{1,})((@[a-zA-Z]{2,})[\\\.]([a-zA-Z]{2}|[a-zA-Z]{3}))';

2016-07-23 17:11:02

这是正确的 RFC822 版本。

function checkEmail(emailAddress) {
  var sQtext = '[^\\x0d\\x22\\x5c\\x80-\\xff]';
  var sDtext = '[^\\x0d\\x5b-\\x5d\\x80-\\xff]';
  var sAtom = '[^\\x00-\\x20\\x22\\x28\\x29\\x2c\\x2e\\x3a-\\x3c\\x3e\\x40\\x5b-\\x5d\\x7f-\\xff]+';
  var sQuotedPair = '\\x5c[\\x00-\\x7f]';
  var sDomainLiteral = '\\x5b(' + sDtext + '|' + sQuotedPair + ')*\\x5d';
  var sQuotedString = '\\x22(' + sQtext + '|' + sQuotedPair + ')*\\x22';
  var sDomain_ref = sAtom;
  var sSubDomain = '(' + sDomain_ref + '|' + sDomainLiteral + ')';
  var sWord = '(' + sAtom + '|' + sQuotedString + ')';
  var sDomain = sSubDomain + '(\\x2e' + sSubDomain + ')*';
  var sLocalPart = sWord + '(\\x2e' + sWord + ')*';
  var sAddrSpec = sLocalPart + '\\x40' + sDomain; // complete RFC822 email address spec
  var sValidEmail = '^' + sAddrSpec + '$'; // as whole string

  var reValidEmail = new RegExp(sValidEmail);

  return reValidEmail.test(emailAddress);
}

2013-04-15 13:31:28

JavaScript 可以匹配一个常规表达式:

emailAddress.match( / some_regex /);

下面是RFC22电子邮件的常规表达式:

^((?>[a-zA-Z\d!#$%&'*+\-/=?^_`{|}~]+\x20*|"((?=[\x01-\x7f])[^"\\]|\\[\x01-\x7f])*
"\x20*)*(?<angle><))?((?!\.)(?>\.?[a-zA-Z\d!#$%&'*+\-/=?^_`{|}~]+)+|"((?=[\x01-\x
7f])[^"\\]|\\[\x01-\x7f])*")@(((?!-)[a-zA-Z\d\-]+(?<!-)\.)+[a-zA-Z]{2,}|\[(((?(?<
!\[)\.)(25[0-5]|2[0-4]\d|[01]?\d?\d)){4}|[a-zA-Z\d\-]*[a-zA-Z\d]:((?=[\x01-\x7f])
[^\\\[\]]|\\[\x01-\x7f])+)\])(?(angle)>)$

2008-09-05 16:13:15

下面是我在前端电子邮件验证中使用的一个功能(常规表达来自parsley.js)

<!DOCTYPE html>
<html>
<head>
    <title>Our Company</title>
    <style>
        .form-style {
            color: #ccc;
        }
    </style>
</head>
<body>
    <h1>Email Validation Form Example</h1>
    <input type="text" name="email" id="emailInput" class="form-style">
    <script>
        function validateEmail(emailAddress) {
            var regularExpression = /^((([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]))){2,6}$/i;
             return regularExpression.test(emailAddress);
        }

        function showEmailValidationState(event) {
            if (validateEmail(event.target.value)) {
                document.getElementById("emailInput").style.color = 'black';
            }
        }
    document.getElementById("emailInput").addEventListener("keyup", showEmailValidationState);
    </script>
</body>
</html>

2014-08-04 18:33:58

Rnevius的(和同事)解决方案是辉煌的,但它允许添加Cyrillic,日本语,Emoticons和其他单码符号,一些服务器可能受到限制。

2017-06-02 07:52:09

我如何在JavaScript中验证电子邮件地址?

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