CODEWITHSUNDEEP
javascriptregexsplit
w3me
w3me

Reputation: 63

Regex: Match all string but capture groups between two symbols

Question:

Given this string:

str = "this is<< just>> an example <<sentence>>"

How do you get the following array:

arr = ["this is", "<< just>>", " an example ", "<<sentence>>"]

Attempts:

I can split the string, however this removes the '<<' and '>>'.

str.split(/<<|>>/)
=> ["this is", " just", " an example ", "sentence"]

I can match the text blocks of text between and including '<<' and '>>', however this is missing the rest of the sentence.

str.match(/(<{2})(.*?>{2})/g)
=> ["<< just>>", "<<sentence>>"]

How do you capture the rest of the string as well as separate capture groups?

Upvotes: 3

Views: 267

Answers (4)

Philipp
Philipp

Reputation: 15629

Simple solution - add the matching groups to your split regex

var str = "this is<< just>> an example <<sentence>>"
var result = str.split(/(<<|>>)/)
console.log(result);

or if you want the <<>> to be included, add them to your matching group

/(<<[^>]+>>)/

Upvotes: 1

Erisan Olasheni
Erisan Olasheni

Reputation: 2905

Split by <<...>> and use .filter(Boolean) to filter out empty values.

const str = "this is<< just>> an example <<sentence>>"

const r = str.split(/(<<[^<>]+>>)/g).filter(Boolean)

console.log(r)

Upvotes: 1

leaf
leaf

Reputation: 1764

Split by <<...>>

const str = "this is<< just>> an example <<sentence>>"

const r = str.split(/(<<[^<>]+>>)/g)

console.log(r)

Upvotes: 1

CertainPerformance
CertainPerformance

Reputation: 370679

Here's one option - match << up to and including >>, OR match characters up to the point where lookahead matches << or the end of the string:

const str = "this is<< just>> an example <<sentence>> foo";
const re = /<<.+?>>|.+?(?=<<|$)/g;
console.log(str.match(re));

Upvotes: 4

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