Is there a Javascript function similar to the Python Counter function?

Question

I am attempting to change a program of mine from Python to Javascript and I was wondering if there was a JS function like the Counter function from the collections module in Pyt

Answer 1

You can use Lo-Dash's countBy function:

var list = ['a', 'b', 'c', 'b', 'a', 'b', 'c', 'a', 'a', 'a'];
console.log(_.countBy(list));

JSFiddle example