字符串正则表达式：从部分字符串中删除方括号

Question

In JavaScript application I need to edit string.

Text comes with this structure:

• It may start with a prefix in square brackets [prefix] . I need to keep this prefix with brackets.
• Second comes [whatever string], but this time I only need to keep string within brackets

Example 1:

[prefix][My title]

Returns: [prefix] My title

Example 2

[Another title without prefix]

Returns: Another title without prefix

Answer 1

This will help you identify any text that is inside brackets

const keyRegex = /(?<=\[)(.*?)(?=\])/gmdi

With this try to use Regex.exec() from here . Following the example from Mozilla developers you could check if array1[0] is equal with prefix or not. Happy coding

Usually more "elegant" code is hard to understand even by future you (can't use comments yet )