JSFiddle - React, Tailwind, and code Playground

by Yuval Bar-On

JavaScript

if (!Object.prototype.getSize) {
    Object.prototype.getSize = function () {
        var size = 0,
            key;
        for (key in this) {
            if (this.hasOwnProperty(key)) size++;
        }
        return size;
    };
}


var l = ["foo", "bar"]
for (var i in l) {
    console.log(i);
}

console.log( Object.keys(l) );