CODEWITHSUNDEEP
javascriptreactjs
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Reputation: 6461

react - .include return unexpected result

I have an string array with below value

const lists = ["EH-AA","EH-BB","EH-CC"]

I tried to use below code and I expect this statement return true.

lists.includes('EH-')

But it returns false actually.
How should I modify the condition statement so that it will return true

Upvotes: 1

Views: 34

Answers (2)

kind user
kind user

Reputation: 41893

You could also join the array and then check if it includes the specified string.

const lists = ['EH-AA', 'EH-BB', 'EH-CC'];

const checkForStr = (arr, str) =>
   arr.join(',').includes(str);

console.log(checkForStr(lists, 'EH-'));
console.log(checkForStr(lists, 'random'));

Upvotes: 1

Jayce444
Jayce444

Reputation: 9063

That's not how includes works, it checks the array for that exact value. You need to loop over each item in the list and check if that item has that substring. You can do that with .some:

lists.some(item => item.includes('EH-'))

Upvotes: 1

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