正则表达式匹配括号 [英] Regular expression to match brackets

问题描述

对于模板引擎，我使用正则表达式来标识字符串中括号内的内容。例如，正则表达式需要匹配{key}或< tag>或[元素]。

For a templating engine, I am using regular expressions to identify content under brackets in a string. For example the regex needs to match {key} or <tag> or [element].

目前我的正则表达式如下所示：

Currently my regular expression looks like this:

var rx=/([\[\{<])([\s\S]+?)([\]\}>])]/;

问题是这样的正则表达式不会强制括号匹配。例如，在以下字符串中：

The issue is that such a regular expression doesn't force brackets to match. For example in the following string:

[{lastName},{firstName}]

正则表达式将匹配 [{lastName}

有没有办法定义匹配括号？例如，如果开头括号是[那么结束括号必须是]，而不是}或者>

Is there a way to define matching brackets? Saying for example that if the opening bracket is a [ then the closing bracket must be a ], not a } or a >

推荐答案

最好的方法，特别是如果不同的括号可以有不同的含义，分为3个正则表达式：

The best way to do this, especially if different brackets can have different meanings, is to split into 3 regular expressions:

var rx1 = /\[([^\]]+)]/;
var rx2 = /\(([^)]+)\)/;
var rx3 = /{([^}]+)}/;

这些将匹配 [] ，（）和 {} 分别在第一个匹配的组中包含文本。

These will match any text surrounded by [], (), and {} respectively, with the text inside in the first matched group.

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