How to check if Two Arrays have Same Elements (Regardless of Order) in JavaScript

How to check if Two Arrays have Same Elements (Regardless of Order) in JavaScript ?

Answer

To check if two arrays have the same elements regardless of order in JavaScript, you can sort both arrays and then compare them using a function.

✐ Examples

1 Arrays with Same Elements (Order Ignored)

In this example,

We create two arrays named arr1 and arr2 with the same elements but in different order.
We sort both arrays using the sort() method.
We then define a function arraysEqual that checks if the sorted arrays are equal.
Finally, we call arraysEqual to compare the arrays and print the result to the console.

JavaScript Program

const arr1 = [1, 2, 3];
const arr2 = [3, 1, 2];

function arraysEqual(arr1, arr2) {
    if (arr1.length !== arr2.length) return false;
    const sortedArr1 = arr1.sort();
    const sortedArr2 = arr2.sort();
    return sortedArr1.every((val, index) => val === sortedArr2[index]);
}

console.log(arraysEqual(arr1, arr2));

Output

true

2 Arrays with Different Elements (Order Ignored)

In this example,

We create two arrays named arr3 and arr4 with different elements.
We sort both arrays using the sort() method.
We then define a function arraysEqual that checks if the sorted arrays are equal.
Finally, we call arraysEqual to compare the arrays and print the result to the console.

JavaScript Program

const arr3 = [1, 2, 3];
const arr4 = [4, 5, 6];

function arraysEqual(arr1, arr2) {
    if (arr1.length !== arr2.length) return false;
    const sortedArr1 = arr1.sort();
    const sortedArr2 = arr2.sort();
    return sortedArr1.every((val, index) => val === sortedArr2[index]);
}

console.log(arraysEqual(arr3, arr4));

Output

false

Summary

In this tutorial, we learned How to check if Two Arrays have Same Elements (Regardless of Order) in JavaScript language with well detailed examples.

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How to check if Two Arrays have Same Elements (Regardless of Order) in JavaScript

How to check if Two Arrays have Same Elements (Regardless of Order) in JavaScript ?

Answer

✐ Examples

1 Arrays with Same Elements (Order Ignored)

JavaScript Program

Output

2 Arrays with Different Elements (Order Ignored)

JavaScript Program

Output

Summary

More JavaScript Arrays Tutorials