Counting the occurrences / frequency of array elements

Question

In Javascript, I\'m trying to take an initial array of number values and count the elements inside it. Ideally, the result would be two new arrays, the first specifying each

Answer 1

I was solving a similar problem on codewars and devised the following solution which worked for me.

This gives the highest count of an integer in an array and also the integer itself. I think it can be applied to string array as well.

To properly sort Strings, remove the function(a, b){return a-b} from inside the sort() portion

function mostFrequentItemCount(collection) {
    collection.sort(function(a, b){return a-b});
    var i=0;
    var ans=[];
    var int_ans=[];
    while(ihigh_count)
        {
            high_count=ans[i].length;
            high_ans=ans[i][0];
        }
        i++;
    }
    return high_ans;
}