how to Extract word combination from an string [closed]

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want to find a way to search for words in a string and return them In the same order so here is an example I am searching for dog and cat :
let story = "The dog ran away, The cat is unhappy,cat watched the sky and saw adog"
result should be :
return dog cat cat dog notice the last one on the story string is "adog" not a "dog" we just want to return the value whenever the dog combination appears.

a simple summary of the text above:
how to return a specific combination of characters in a string when they are surrounded by other characters.

Gabriele Petrioli · Accepted Answer · 2022-02-25 05:56:03Z

3

You can use regular expressions, using the | to separate the strings to search for.

The match() method retrieves the result of matching a string against a regular expression.

let story = "The dog ran away, The cat is unhappy,cat watched the sky and saw adog" 

const search = /dog|cat/g;

console.log(story.match(search));

// will result in ["dog", "cat", "cat", "dog"]

edited Feb 25, 2022 at 5:56

answered Feb 25, 2022 at 5:52

Gabriele Petrioli

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2 Comments

alireza Over a year ago

Woah amazing /dog|cat/g its regex right ? what are some articles that can help me in these situations? thank you in advance.

Gabriele Petrioli Over a year ago

@alireza I added a link to MDN in the answer, and another one with tons of info is regular-expressions.info Also a good one to test regular expressions is regex101.com

Arman Ebrahimi · Accepted Answer · 2022-02-25 06:44:56Z

2

In string format:

let str = 'a dog see a cat, also cat and adog ..';

let filtered = str.split(' ').filter(x => x.match(/(dog|cat)/g)).join(' ');

console.log(filtered.match(/(dog|cat)/g).join(','));

In array format:

let str = 'a dog see a cat, also cat and adog ..';

let filtered = str.split(' ').filter(x => x.match(/(dog|cat)/g)).join(' ');

console.log(filtered.match(/(dog|cat)/g));

Here, see the first comment:

find and return string with a specific word in it in js

answered Feb 25, 2022 at 6:44

Arman Ebrahimi

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