Is there a way to check if two arrays have the same elements?

Question

Let say I have 2 arrays

firstArray  = [1, 2, 3, 4, 5];
secondArray = [5, 4, 3, 2, 1];

I want to know if they contain the same elements, whi

Answer 1

Not in Vanila Javascript but in Angular there is option to match two objects.

angular.equals([1,2,3],[1,2,3])

Determines if two objects or two values are equivalent. Supports value types, regular expressions, arrays and objects.

See if this could help you.

alert("Match result of [1,2,3] &  [1,2,3] is "+angular.equals([1,2,3],[1,2,3]));

alert("Match result of [1,4,3] &  [1,2,3] is "+angular.equals([1,4,3],[1,2,3]));

Click on Run Code snippet. If this solves your need please mark it as as Answer :)

In case order is not important and array is of number type.

var a1 = [1, 2, 3];
var a2 = [2, 1, 3];
//In case order is not important and array is of number type.
alert(eval(JSON.stringify(a1).replace(/,/g, "+").replace(/\[/g, "").replace(/\]/g, "")) === eval(JSON.stringify(a2).replace(/,/g, "+").replace(/\[/g, "").replace(/\]/g, "")));