我怎样才能在jQuery中使用preg_match？

问题描述

我可以使用preg_match来验证jQuery中的电话号码吗？这是我的代码不起作用

  if（！preg_match（/ ^ [0-9] {3}  -  | \ [0-9] {3}  -  | \ [0-9] {4} $ /，phone.val（）））{
 phone.addClass（needsfilled）; 
 phone.val（phonerror）; 
} 
  

HTML
< input id = phonetype =textvalue =name =phone/>

任何人都可以帮助plz

解决方案

Javascript包含一个正则表达式引擎，可通过 string.match（）， string.replace（）和 string.split（） functions。

例如：

  var mystring =这是一个句子; 
 mystring = mystring.replace（/ sentence /，'string'）; 
 
 var matches = mystring.match（/ \ b\w + \b /）; 
  

这应该为您提供与 preg_match（）相同的功能。

所以要在你的问题中进行与preg_match相同的验证：

<$ p $ ！p> 如果（phone.val（）匹配（/ ^ [0-9] {3} - | \s [0-9] {3} - | \s [O- 9] {4} $ /））{
phone.addClass（needsfilled）;
phone.val（phonerror）;
}


如果您绝对坚持使用名为的函数preg_match （）与PHP版本完全相同，有一个名为的项目，旨在实现PHP函数的JavaScript。快速查看他们的网站显示，尽管他们目前没有完全正常工作的 preg_match（）实现，但他们有一个，您可能需要查看。但坦率地说，内置的Javascript .match（）函数应该足够了。

Can i use preg_match to validate phone number in jQuery? Here is my code which does not work

if (!preg_match("/^[0-9]{3}-|\s[0-9]{3}-|\s[0-9]{4}$/", phone.val() ))  {
            phone.addClass("needsfilled");
            phone.val(phonerror);
        }

HTML<input id="phone" type="text" value="" name="phone" />

Could any one help plz

解决方案

Javascript includes a regular expression engine, which is accessed via the string.match(), string.replace() and string.split() functions.

For example:

var mystring = "this is a sentence";
mystring = mystring.replace(/sentence/,'string');

var matches = mystring.match(/\b\w+\b/);

That should provide you with essentially the same functionality as preg_match().

So to do the same validation as the preg_match in your question:

if(!phone.val().match(/^[0-9]{3}-|\s[0-9]{3}-|\s[0-9]{4}$/)) {
     phone.addClass("needsfilled");
     phone.val(phonerror);
}

If you absolutely insist on having a function called preg_match() which works exactly like the PHP version, there is a project called PHPJS, which aims to implement PHP functions in Javascript. A quick look at their site shows that although they don't currently have a fully working preg_match() implementation, they have an unfinished implementation which you may want to look at. But frankly, the built-in Javascript .match() function should be more than sufficient.

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