Sometimes, we want to check if array contains all elements of another array with JavaScript.
In this article, we’ll look at how to check if array contains all elements of another array with JavaScript.
How to check if array contains all elements of another array with JavaScript?
To check if array contains all elements of another array with JavaScript, we call the every method.
For instance, we write
const array1 = [1, 2, 3];
const array2 = [1, 2, 3, 4];
const checker = (arr, target) => target.every((v) => arr.includes(v));
console.log(checker(array2, array1));
to call target.every`` with a callback that checks if every item vintargetis in thearrarray withincludes`.
Then we call checker with the 2 arrays to check.
Conclusion
To check if array contains all elements of another array with JavaScript, we call the every method.
