CODEWITHSUNDEEP
javascriptregex
holalluis
holalluis

Reputation: 108

Add braces around digits with a regex?

I want to convert a string like this

var string = "3*v0-v1/v12"

to one like this using only one regex:

var result = "3*v[0]-v[1]*v[12]"

The tricky part is to add the numbers when adding the braces, something like:

var result = string.replace(/v\d{1,2}/g, /REGEX HERE/)

Upvotes: 0

Views: 1547

Answers (1)

Ethan Brown
Ethan Brown

Reputation: 27282

This should do the trick:

var result = string.replace(/v(\d{1,2})/g, 'v[$1]');

The parentheses create a group, and the $1 is a backreference referring to that group:

enter image description here

Upvotes: 3

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