Sometimes, we want to check if two arrays have the same values with JavaScript.
In this article, we’ll look at how to check if two arrays have the same values with JavaScript.
How to check if two arrays have the same values with JavaScript?
To check if two arrays have the same values with JavaScript, we can use the array every method.
For instance, we write
const set1 = new Set(arr1);
const set2 = new Set(arr2);
return (
arr1.every((item) => set2.has(item)) && arr2.every((item) => set1.has(item))
);
to convert arrays arr1 and arr2 to sets.
And then we call arr1.every with a callback to see if set2 has the item in arr1.
Then we call arr2.every with a callback to see if set1 has the item in arr2.
If both every call return true, then both arrays have the same values.
Conclusion
To check if two arrays have the same values with JavaScript, we can use the array every method.
