正则表达式，用于验证美国电话号码格式 [英] RegEx for validating US phone number format

问题描述

我搜索了电话号码验证并以下面的javascript代码结尾

jQuery.validator.addMethod("phoneUS", function(phone_number, element) {
      phone_number = phone_number.replace(/\s+/g, "");
      return this.optional(element) || phone_number.length > 9 &&
               phone_number.match(/^\(?(\d{3})\)?[-\. ]?(\d{3})[-\. ]?(\d{4})$/);
}, "");

对于以下格式，上面的代码将返回true

123-123-1234 或[phone] 或 1231231234

我需要添加数字的扩展名，例如

123-123-1234 x1234

[phone] x1234

1231231234 x1234

我尝试过使用正则表达式的全部经验(很少:))，但没有用:(

您可以更改我的正则表达式以验证 x1234

谢谢.

解决方案

您可以在正则表达式的末尾添加可选的匹配项

( x\d{4})? 

x后面将匹配数字，例如x1234(如果存在)

• ( x\d{4})?量词?匹配( x\d{4})的零个或一次出现

  正则表达式可以是

  ^\(?(\d{3})\)?[-\. ]?(\d{3})[-\. ]?(\d{4})( x\d{4})?$
  

  例如: http://regex101.com/r/sG9qJ6/1

  I searched for phone number validation and ended up with below javascript code

  jQuery.validator.addMethod("phoneUS", function(phone_number, element) {
        phone_number = phone_number.replace(/\s+/g, "");
        return this.optional(element) || phone_number.length > 9 &&
                 phone_number.match(/^\(?(\d{3})\)?[-\. ]?(\d{3})[-\. ]?(\d{4})$/);
  }, "");
  

  The above code will return true for below formats

  123-123-1234 or [phone] or 1231231234

  Nw I need to add extension for number for eg

  123-123-1234 x1234

  [phone] x1234

  1231231234 x1234

  I tried with all my experience with regex (much little :) ) but didn't worked :(

  Can you change in my regex to validate x1234

  Thanks.

  解决方案

  You can add an optional match at the end of the regex

  ( x\d{4})? 
  

  Which will match x followed by digits, that is eg x1234 if it is present

  • ( x\d{4})? the quantifier ? matches zero or one occurence of ( x\d{4})

  The regex can be

  ^\(?(\d{3})\)?[-\. ]?(\d{3})[-\. ]?(\d{4})( x\d{4})?$
  

  For example : http://regex101.com/r/sG9qJ6/1

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