如何匹配两个冒号包围的字符串？使用Javascript [英] How to match string surrounded by two colons? Javascript

问题描述

我有以下刺痛

 11:50:00 

我如何匹配50分钟？



我尝试过：



var minutes = str.match（/ \：/ d {2} \：/ ）; //匹配：50：，我怎么才能匹配数字？

编辑：

我已经找到了如何匹配这个正则表达式的分钟arg .match（/ \d {2}（？=：\d + $）/）;

问题是，如果用户在它之前键入一个空格，这仍然会匹配，怎么能我阻止它？

解决方案

）/）;

问题是，如果用户在它之前键入一个空格，这仍然会匹配，我该怎样阻止它？

试试：

（？< = \d + :) \\ \\ n {2}（？=：\d +）

[edit]

愚蠢的语言Javascript - 这是正则表达式不支持lookbehind ...：叹气：



试试这个：

 \d { 2}（=：\d +  
 
）

它不那么强大，但它可以在JS中运行......

[/ edit]

I have the following sting "

11:50:00

how can I match minutes which is 50?

What I have tried:

var minutes = str.match(/\:/d{2}\:/);//matches ":50:", how can I match only the number?
Edited:
I have already found out how to match minutes with this regex arg.match(/\d{2}(?=:\d+$)/);
The problem is, if a user types a space before it, this still will match, how can I prevent it?

解决方案

)/);
The problem is, if a user types a space before it, this still will match, how can I prevent it?

Try:

(?<=\d+:)\d{2}(?=:\d+)

[edit]
Stupid language Javascript - it's regular expressions don't support lookbehind... :sigh:

Try this:

\d{2}(?=:\d+

)

It's not as robust, but it'll work in JS...
[/edit]

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