CODEWITHSUNDEEP
javascriptregexlistreplacecapture-group
idmadj
idmadj

Reputation: 2645

Capturing items from multiple lists using a single regex

My input looks like this:

Lorem ipsum dolor sit amet, consectetur adipiscing elit. _4,7,13 Nullam suscipit orci sit amet feugiat facilisis. Curabitur eget 8 ligula malesuada, vehicula 3,6 quam sit amet, _5 tempor velit.

I need to capture every number that's in a comma-separated list preceded by _, individually and using a single regex.

In other words, I need the bolded numbers above:

[4, 7, 13, 5]

I've been trying again and again to make this work without success. I'd like to know if this is even possible before forfeiting and going with multiple expressions.

I'm looking for a solution in Javascript, but obviously any pointer will help.

Upvotes: 1

Views: 42

Answers (2)

anubhava
anubhava

Reputation: 785721

You can use this code in Javascript:

var input = 'Lorem ipsum dolor sit amet, consectetur adipiscing elit. 4,7,13 Nullam suscipit orci sit amet feugiat facilisis. Curabitur eget 8 ligula malesuada, vehicula 3,6 quam sit amet, 5 tempor velit.';

var matches = [];
input.replace(/_(\d+(?:,\d+)*)\b/g, function($0, $1) { 
      matches = matches.concat( $1.split(/,/g) ); return $1; } );

console.log(matches);
//=> ["4", "7", "13", "5"]

Upvotes: 1

vks
vks

Reputation: 67988

(_\d+(?:,\d+)*)

Try this.Grab the captures.Then split by ,.See demo.

http://regex101.com/r/rQ6mK9/23

Upvotes: 0

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