用于GMail样式的电子邮件地址验证的Javascript正则表达式 [英] Javascript regex for GMail-style email address validation

问题描述

我需要一个正则表达式，该表达式可以接受多种格式的电子邮件（请参见下文），并以逗号分隔的列表形式输入。我有基本的电子邮件地址
验证正则表达式，

I need a regular expression that will accept well-formed emails in several formats (see below) that will be input in a comma-separated list. I have the basic email address validation regex,

^[\w\d._%+-]+@(?:[\w\d-]+\.)+(\w{2,})(,|$) 

可以处理测试用例 A 和 B ，但不能处理其他用例。我也尝试过

which can handle test cases A and B, but not the others. I also tried

^(\<)?[\w\d._%+-]+@(?:[\w\d-]+\.)+(\w{2,})(\>)?(,|$)

能够处理 A ， B 和 C ，但仅在每个测试用例 D 和 E 中验证了第一个电子邮件地址。我什至还没有测试格式为 3 的正则​​表达式。

which was able to handle A, B, and C, but only validated the first email address in each of test cases D and E. I haven't even gotten to testing a regex for format 3.

tl; dr 需要一个正则表达式来验证电子邮件地址 1 ， 2 ，以及 3 。

tl;dr Need a regex that will validate email addresses 1, 2, and 3.

测试您的正则表达式的好网站：在线Javascript正则表达式测试器

Good website to test your regular expressions: Online Javascript Regex Tester

数据

Data

测试用例

A. [e-mail]

B. [e-mail]，[e-mail]

C. < [e-mail]> ，[e-mail]

D. < [e-mail]>，< [e-mail]>

[e-mail]，< [e-mail]> ;

Test Cases
A. [e-mail]
B. [e-mail], [e-mail]
C. <[e-mail]>, [e-mail]
D. <[e-mail]>, <[e-mail]>
E. [e-mail], <[e-mail]>

电子邮件地址格式

1. [e-mail]

2. < [e-mail]>

3. xyz < xyz @ example .com>

我已标记这可能是以下内容的重复项：

I flagged this as a possible duplicate of:

验证JavaScript中的电子邮件地址？

似乎与以下内容重复：

使用正则表达式来验证电子邮件地址

两者都包含很多有关正则表达式作为电子邮件验证的有效性的讨论。但是，提供的投票最多的正则表达式似乎并没有达到我想要的功能，因此我还没有考虑到这个答案。

both of which contain much discussion on the validity of regex as email validation. However, the top-voted regexes provided don't seem to do quite what I want so I don't consider this answered yet.

推荐答案

提供的链接或答案均不是此问题的最佳答案。解决问题的方法如下：

None of the links or answers provided was the best answer for this question. Here's what solved it:

/*
* regex checks: must start with the beginning of a word or a left caret
* must end with either the end of a word or a right caret
* can handle example.example.com as possible domain
* email username can have + - _ and .
* not case sensitive
*/
var EMAIL_REGEX = /(\<|^)[\w\d._%+-]+@(?:[\w\d-]+\.)+(\w{2,})(\>|$)/i;  
var emails = emailList.trim().split(',');  
var validEmails = [];  
var invalidEmails = [];  

for (var i = 0; i < emails.length; i++) {  
    var current = emails[i].trim();
    if(current !== "") {
        //if something matching the regex can be found in the string
        if(current.search(EMAIL_REGEX) !== -1) {
            //check if it has either a front or back bracket
            if(current.indexOf("<") > -1 || current.indexOf(">") > -1) {
                //if it has both, find the email address in the string
                if(current.indexOf("<") > -1 && current.indexOf(">") > -1) {
                    current = current.substr(current.indexOf("<")+1, current.indexOf(">")-current.indexOf("<") -1);
                } 
            } 
        }
        if(EMAIL_REGEX.test(current)) {
            validEmails.push(current);
        } else {
            invalidEmails.push(current);
        }
    }               
}

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