使用javascript验证多个电子邮件逗号分隔 [英] Validate Multiple Emails Comma Separated with javascript

问题描述

我想验证一个字符串，该字符串可以是电子邮件或多个用逗号分隔的电子邮件。

I want to validate a string which can be an email or multiple emails separated by commas.

例如：

[e-mail] - > TRUE

bill - > FALSE

bill.gates @ microsoft.com，steve.jobs @ apple.com - > TRUE

bill.gates @ microsoft.com，steve.jobs @ apple.com，bob - > false

bob，bill.gates @ microsoft.com，steve.jobs @ apple.com - > false

[e-mail] -> TRUE
bill -> FALSE
[e-mail],[e-mail]" -> TRUE
[e-mail],[e-mail], bob" -> false
bob,[e-mail],[e-mail]" -> false

我推出了下一个适用于测试用例的代码。

I came out with the next code which works with the test cases.

function validateEmail(field) {
    var regex=/\b[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}\b/i;
    return (regex.test(field)) ? true : false;
}

function validateMultipleEmailsCommaSeparated(value) {
    var result = value.split(",");
    for(var i = 0;i < result.length;i++)
    if(!validateEmail(result[i])) 
            return false;           
    return true;
}

这是快车吗？ st方式做到了吗？如果我想允许怎么办并且，作为分隔符？

Is this the quickest way to do it? What if I want to allow ; and , as separator?

推荐答案

您不应将顶级域名与 [AZ] {匹配2,4} ：

.museum 或。旅行？那些IDNA域如 .xn - 0zwm56d 或 .xn - 11b5bs3a9aj6g ？

What about .museum or .travel? What about IDNA domains like .xn--0zwm56d or .xn--11b5bs3a9aj6g?

此外，拥有像John Doe@ example.org 这样的电子邮件地址是完全有效的。

Also, it's perfectly valid to have an email-address like "John Doe"@example.org.

在我看来，你应该在客户端检查的是，地址是否包含 @ 以及是否至少有一个。之后。在服务器端，您可以检查服务器是否存在（您甚至可能想尝试连接到相应的SMTP端口）或只发送验证邮件。

In my opinion, all you should check on the client side is if the address contains an @ and if there's at least one . after it. On the server side, you could check if the server exists (you might even want to try connecting to the appropriate SMTP port) or just send out a validation mail.

所有内容否则很容易出错，因为实际的正则表达式会检查有效的电子邮件地址像这样。

Everything else is prone to errors as the actual regex to check for valid email addresses looks like this.

此外，这

return (regex.test(field)) ? true : false;

是一个严重的WTF - test（）已经返回一个布尔值！

is a serious WTF - test() already returns a boolean value!

如果要允许不同的分隔符，请使用正则表达式而不是字符串进行拆分，例如

If you want to allow different separators, use a regular expression instead of a string for splitting, eg

value.split(/,|;/)

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