CODEWITHSUNDEEP
javascriptnode.jsregex
Techie
Techie

Reputation: 21

Regex pattern to identify only one set of curly brackets

I'm looking for a regex pattern which will match only one set of curly brackets. Basically I have a object like this: {Hello: '${name}'} and I want a pattern which will only replace the brackets around the variable and not all. The output should be something like: {Hello: 'name'} and the value of name can then be inserted. This is the regex that I created: (\$\{|\}) but it is replacing even the last bracket and outputs something like this: {Hello: 'name' Can anyone help me figure out where I'm going wrong?

Upvotes: 1

Views: 68

Answers (1)

Wiktor Stribiżew
Wiktor Stribiżew

Reputation: 626950

You can use

.replace(/\$\{(\w+)}/g, '$1')

Alternatively:

.replace(/\$\{([^{}]+)}/g, '$1')

See the regex demo. Details:

  • \$\{ - ${ string
  • (\w+) - Group 1: one or more letters/digits/underscores
  • [^{}]+ - one or more chars other than { and }
  • } - a } char.

See the JavaScript demo:

console.log("{Hello: '${name}'}".replace(/\$\{(\w+)}/g, '$1'))

Upvotes: 2

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