修改正则表达式以检查字符串是否在jquery中不包含电子邮件地址

问题描述

我有一个正则表达式，用于检查是否没有输入有效的电子邮件地址

I have a regex that check if no email address is input that works

$.validator.addMethod('contains_no_email', function (value, element) {
    return this.optional(element) || /^(?!\w+([-+.'][^\s]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$)/.test(value);
}, "Do not include an email address");

现在，我需要对其进行修改以检查字符串是否不包含电子邮件地址.

Now I need to modify it to check if a sting contains no email address.

我想要:

[email protected] (是)

[email protected] 一些单词(正确)

一些单词 [email protected] (是)

一些单词 [email protected] 一些单词(正确)

some words [email protected] some words (True)

一些词(假)

推荐答案

您需要确保输入文本与包含电子邮件的字符串不匹配.因此，您可以在此处遵循两种方法:

You need to make sure the input text does not match a string that contains an email. So, you can follow two approaches here:

1. 使用 /\ w +(?:[-+.'] \ w +)* @ \ w +(?:[-.] \ w +)* \.\ w +(?:[-.] \ w +)*/ 正则表达式并设置 contains_no_email:false

使用正则表达式匹配任何字符串，但匹配包含类似于电子邮件的字符串且带有 /^(?！[^] *?\ w +(?:[-+.'] \ w +)* @ \ w +(?:[-.] \ w +)* \.\ w +(?:[-.] \ w +)*)/ 并使用 contains_no_email:true .

Use a regex that matches any string but a string containing an email-like string with /^(?![^]*?\w+(?:[-+.']\w+)*@\w+(?:[-.]\w+)*\.\w+(?:[-.]\w+)*)/ and use contains_no_email: true.

您可以通过更改 contains_no_email 值来交换逻辑.

You may swap the logic by changing the contains_no_email value.

以下是示例解决方案:

$.validator.addMethod('contains_no_email', function (value, element) {
    return this.optional(element) ||
           /^(?![\s\S]*?\w+(?:[-+.']\w+)*@\w+(?:[-.]\w+)*\.\w+(?:[-.]\w+)*)/.test(value);
    }, "Do not include an email address"
);

$('#myform').validate({
        // other options,
        rules: {
            "email": {
                required: true,
                contains_no_email: true
            }
        }
    });

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="http://ajax.aspnetcdn.com/ajax/jquery.validate/1.13.1/jquery.validate.js"></script>
<script src="http://ajax.aspnetcdn.com/ajax/jquery.validate/1.13.1/additional-methods.js"></script>

<form id="myform">
    <input type="text" name="email" /><br/>
    <br/>
    <input type="submit" />
</form>

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