Discussion on: Start Javascript: learn about variables

[Mike Ross 🇺🇸]

Here's something fun to show people. Watch how long the JSON string becomes between an array and an object in these two scenarios:

var a = [];
a[1111] = 1234;
a[2222] = 1234;
console.log(JSON.stringify(a));

as opposed to:

var a = {};
a[1111] = 1234;
a[2222] = 1234;
console.log(JSON.stringify(a));

Key point -- you'll often want to use objects instead of arrays.