How to compare two arrays in node js?

Question

I am having two arrays, how can i compare the two arrays at single shot.

   var arr1= [\"a\",\"b\",\"c\"];
   var arr2 = [\"a\",\"c\",\"d\"]

   if(arr1 == a         


        

Answer 1

[ES6]

Top answer is good & enough.

But when you just want to compare its values are same you have to sort it before. here's no need sort code.

if(arr1.length == arr2.length && arr1.every((v) => arr2.indexOf(v) >= 0)) {
    console.log(true);
} else {
    console.log(false);
}

And.. I think using a 'some' instead of 'every' is better.

If those are not same, 'some' gives you a early exit. - very little early but early ;)

if(arr1.length == arr2.length && !arr1.some((v) => arr2.indexOf(v) < 0)) {
    console.log(true);
} else {
    console.log(false);
}