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Check if values of two arrays are the same/equal in JavaScript
We have two arrays of numbers, let’s say −
[2, 4, 6, 7, 1] [4, 1, 7, 6, 2]
Assume, we have to write a function that returns a boolean based on the fact whether or not they contain the same elements irrespective of their order.
For example −
[2, 4, 6, 7, 1] and [4, 1, 7, 6, 2] should yield true because they have the same elements but ordered differently.
Now, let’s write the code for this function −
Example
const first = [2, 4, 6, 7, 1];
const second = [4, 1, 7, 6, 2];
const areEqual = (first, second) => {
if(first.length !== second.length){
return false;
};
for(let i = 0; i < first.length; i++){
if(!second.includes(first[i])){
return false;
};
};
return true;
};
console.log(areEqual(first, second));Output
The output in the console will be −
true
Updated on: 24-Aug-2020
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