在Javascript中获取括号之间的字符串的正则表达式 [英] Regular Expression to get a string between parentheses in Javascript

问题描述

我正在尝试编写一个正则表达式，它返回一个位于括号之间的字符串.例如:我想获取位于字符串("和)"之间的字符串

I am trying to write a regular expression which returns a string which is between parentheses. For example: I want to get the string which resides between the strings "(" and ")"

I expect five hundred dollars ($500).

会回来

$500

找到 正则表达式获取字符串Javascript 中两个字符串之间

但我是正则表达式的新手.我不知道如何在正则表达式中使用 '(', ')'

But I'm new with regex. I don't know how to use '(', ')' in regexp

推荐答案

您需要创建一组转义的(带有 )括号(匹配括号)和一组常规括号创建您的捕获组:

You need to create a set of escaped (with ) parentheses (that match the parentheses) and a group of regular parentheses that create your capturing group:

var regExp = /(([^)]+))/;
var matches = regExp.exec("I expect five hundred dollars ($500).");

//matches[1] contains the value between the parentheses
console.log(matches[1]);

细分:

• ( : 匹配一个左括号
• ( : 开始捕获组
• [^)]+:匹配一个或多个非)字符
• ) : 结束捕获组
• ) : 匹配右括号

• ( : match an opening parentheses
• ( : begin capturing group
• [^)]+: match one or more non ) characters
• ) : end capturing group
• ) : match closing parentheses

这是对 正则解释

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