JSFiddle - React, Tailwind, and code Playground

JavaScript

var values = ["0", "2", "8", "8", "8", "8", "8", "8", "2", "9", "9", "9", "9", "9", "2", "10", "10", "10", "10", "10", "10", "10", "10", "0", "3", "11", "11"]

var counts = {};

_.each(values, function(v, i) {

    if (counts[v]) {
        counts[v] ++;
    } else {
        counts[v] = 1;
    }
});

console.log(counts);