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}))';

<pre>
**The personal_info part contains the following ASCII characters.
1.Uppercase (A-Z) and lowercase (a-z) English letters.
2.Digits (0-9).
3.Characters ! # $ % & ' * + - / = ? ^ _ ` { | } ~
4.Character . ( period, dot or fullstop) provided that it is not the first or last character and it will not come one after the other.**
</pre>
*Example of valid email id*
<pre>
yoursite@ourearth.com
my.ownsite@ourearth.org
mysite@you.me.net
xxxx@gmail.com
xxxxxx@yahoo.com
</pre>
<pre>
xxxx.ourearth.com [@ is not present] 
xxxx@.com.my [ tld (Top Level domain) can not start with dot "." ]
@you.me.net [ No character before @ ]
xxxx123@gmail.b [ ".b" is not a valid tld ]
xxxx@.org.org [ tld can not start with dot "." ]
.xxxx@mysite.org [ an email should not be start with "." ]
xxxxx()*@gmail.com [ here the regular expression only allows character, digit, underscore and dash ]
xxxx..1234@yahoo.com [double dots are not allowed
</pre>
**javascript mail code**

    function ValidateEmail(inputText)
    {
    var mailformat = /^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/;
    if(inputText.value.match(mailformat))
    {
    document.form1.text1.focus();
    return true;
    }
    else
    {
    alert("You have entered an invalid email address!");
    document.form1.text1.focus();
    return false;
    }
    }

在 nodeJS 中,您也可以使用验证器节点模块,并简单地使用此类

使用 npm 安装验证器安装图书馆

var validator = require('validator');

validator.isEmail('foo@bar.com'); //=> true 

下面是MDN上推荐的Regex模式为HTML5:

支持电子邮件输入类型的浏览器自动提供验证,以确保仅符合互联网电子邮件地址标准格式的文本输入到输入框中。

/^[a-zA-Z0-9.!#$%&'*+\/=?^_`{|}~-]+@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}
[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*$/

https://developer.mozilla.org/en-US/docs/Web/HTML/元素/输入/电子邮件#验证

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}))';

使用浏览器/运行时间来处理通过预付一个协议并将其转移到URL API,捕捉任何错误并检查结果的用户名和主名属性。

function validEmail(email=''){
    var $0, url, isValid = false, emailPatternInput = /^[^@]{1,64}@[^@]{4,253}$/, emailPatternUrl = /^[^@]{1,64}@[a-z][a-z0-9\.-]{3,252}$/i;
    email = email.trim();
    try{
        url = new URL('http://'+email);
        $0 = `${url.username}@${url.hostname}`;
        isValid = emailPatternInput.test( email );
        if(!isValid) throw 'invalid email pattern on input:' + email;
        isValid = emailPatternUrl.test( $0 );
        if(!isValid) throw 'invalid email pattern on url:' + $0;
        console.log(`email looks legit "${email}" checking url-parts: "${$0 === email ? '-SAME-':$0}"`);
    }catch(err){
        console.error(`probably not an email address: "${email}"`, err);
    };
    return isValid;
}

['user+this@はじめよう.みんな', 'stuff@things', 'user+that@host.com', 'Jean+François@anydomain.museum','هيا@יאללה', '试@例子.测试.مثال.آزمایشی', 'not@@really', 'no'].forEach(email=>console.log(validEmail(email), email));

这是我可以提出的最简单和最一般允许的例子,请在可以更准确的情况下编辑,同时保持其简单性和合理的一般允许有效性。

此外,请参见 MDN URL 文件 URL, window.URL 和 Nodejs for URL APIs。