Types

JavaScript has 8 types:

Object

The object data type can contain both built-in objects, and user defined objects

Built-in Objects can be:

const car_makers = ["Hyndai", "Honda", "Toyota", "Kia"];

// Create a new Date object with the given date
//
// January 1, 1970 is Linux "epoch"
const epoch = new Date("1970-01-01");

const hello = "Hello";

JavaScript’s Number covers both integers (whole numbers, i.e. 1, 5, 10, 1000), and floats (decimals, i.e. 3.14, 9.81)

// an "integer" (This is a number)
const answer = 42;
// a "float" (This is also a number)
const gravity = 9.81;

The Number type holds upto 15 digits of precision

A Bigint holds big integers (no decimals)

const big = 1234567890123456789012345n;
const big2 = Bigint(1234567890123456789012345);

// Booleans are either true or false
const always = true;

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