CODEWITHSUNDEEP
javascriptregex
Fill
Fill

Reputation: 545

Match and replace regex with modified regex in JS

Currently I'm going through a string like so:

'@test1 in else',
'@test2 in something',

and look only for

test1
test2

my goal is to have end result of string to look like this:

'([@test1])(test1) in else',
'((@test2))(test2) in something',

This is what I do but clearly it doesn't work:

fileData.replace(/@(\w)+/g, '([' + /@(\w)+/g + '](' + /@(\w)+/g) + ')')

I don't understand how can I save the regex that I found and use it in modified version

Upvotes: 2

Views: 43

Answers (1)

anubhava
anubhava

Reputation: 784928

You can use this code:

const str = `'@test1 in else',
'@test2 in something',`;
var repl = str.replace(/@(\w+)/g, '([@$1])($1)');

console.log(repl);

RegEx Demo

Breakup:

  • @(\w+): Match a text starting with @ followed by 1+ word charts and capture word chars in capture group #1
  • ([@$1])($1): Replacement part to place capture text in wrapper brackets twice

Upvotes: 2

Related Questions