How to check whether a string with more words contains a substring with more words in JavaScript?

Question

This answer helps a lot when we have one word in string and one word in substring. Method includes() do the job. Any idea how to solve this if there is more than one word in string and more then one word in substring? For example:

const string = "hello world";
const substring = "hel wo";

console.log(string.includes(substring)); --> //This is false, but I want to change the code to return true

Should I create some arrays from string and substring using split(" ") and than somehow compare two arrays?

Ivar · Accepted Answer · 2021-03-08 15:10:25Z

2

You can split the "substring" on whitespace to get an array of all substrings you want to look for and then use Array.prototype.every() to see if all substrings are found:

const string = "hello world";
const substring = "hel wo";

console.log(substring.split(/\s+/).every(substr => string.includes(substr)));

answered Mar 8, 2021 at 15:10

Ivar

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5 Comments

ray Over a year ago

Note that this would also return true for "wo hel".

Ivar Over a year ago

@rayhatfield Good point, though it is not clear from the question that it should not be.

ray Over a year ago

Right. Just an observation. Wasn't clear whether was desirable or problematic. And the more I think about this the more uncertain I am about what OP is trying to accomplish. Partial words? Starts with? Some of the same characters?

Ivar Over a year ago

Now that you mention it, they might also want to match it word for word. (i.e. the first word should contain the first substring etc.) I'll leave my answer up for now. If they clarify I'll update/delete it. (And if they don't clarify, it still might help someone else in the future.)

nemostyle Over a year ago

@Ivar This is all what I needed, thank you. :)

Odinh · Accepted Answer · 2021-03-08 15:21:13Z

0

you can use regex for this:

var str = "hello world";
var patt = new RegExp(/.{0,}((?:hel)).{0,}((?:wo)).{0,}/ig);
console.log(patt.test(str));

answered Mar 8, 2021 at 15:21

Odinh

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