CODEWITHSUNDEEP
javascriptregex
Bichoy Messiha
Bichoy Messiha

Reputation: 173

Regex JS: Searching between two same words

I have a long text which contains some tags to highlight the text between. I need to match the text between these tags. Here is the list of tags: CA | OU | TC.

So I did this:

\[[CA|OU|TC]+\][\s\S]*?\[-[CA|OU|TC]+\]

It matches correctly these strings

[CA] bla bla [-CA]
[OU] bla[-OU]
[TC] blabla [-TC]

The problem is that I need to only match if the tags are the same. It should not match the following.

[CA] bla bla [-OU]

Any ideas? Thank you.

Upvotes: 1

Views: 38

Answers (1)

Wiktor Stribiżew
Wiktor Stribiżew

Reputation: 626738

You may use

\[(CA|OU|TC)][\s\S]*?\[-\1]

See the regex demo.

The (CA|OU|TC) forms a capturing group and \1 matches the same value.

var s = '[CA] bla bla [-CA] [OU] bla[-OU] [TC] blabla [-TC]] [CA] bla bla [-OU]';
var rx = /\[(CA|OU|TC)][\s\S]*?\[-\1]/g;
console.log( s.match(rx) );

Upvotes: 1

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