JSFiddle - React, Tailwind, and code Playground

JavaScript

var a = {a: 2, b: 1};

console.log('Declared order');
$.each(a, function(i) {
    console.log(i+': '+a[i]);
});

console.log('Reverse order');
var keys = [];
for(var k in a) keys.unshift(k);
$.each(keys, function(i) {
    console.log(keys[i]+': '+a[keys[i]]);
    var aaaa = {keys[i]+': '+a[keys[i]]};
});