使用正则表达式从url中提取参数值 [英] Extract parameter value from url using regular expressions

问题描述

这应该非常简单(当您知道答案时).来自这个问题

This should be very simple (when you know the answer). From this question

我想尝试发布的解决方案.我的问题是:

I want to give the posted solution a try. My question is:

如何使用JavaScript正则表达式获取给定URL的参数值?

How to get the parameter value of a given URL using JavaScript regular expressions?

我有:

http://www.youtube.com/watch?v=Ahg6qcgoay4

我需要:

Ahg6qcgoay4

我尝试过:

http://www.youtube.com/watch\\?v=(w{11})

但是:我很烂...

推荐答案

您几乎拥有它，只需要转义特殊的正则表达式字符即可:

You almost had it, just need to escape special regex chars:

regex = /http\:\/\/www\.youtube\.com\/watch\?v=([\w-]{11})/;

url = 'http://www.youtube.com/watch?v=Ahg6qcgoay4';
id = url.match(regex)[1]; // id = 'Ahg6qcgoay4'

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