Web Development: Unraveling HTML, CSS, and JavaScript/

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Working With the Number Type

Working With the Number Type

In this lesson, we will cover the number type in JavaScript. Let's begin!

We'll cover the following...

JavaScript does not make a distinction among types of numbers, such as integers and floating-point numbers with different lengths.

JavaScript only has a single number type that represents both integers and floating point numbers using the IEEE-754 format.

You can check the Number.MIN_VALUE and the Number.MAX_VALUE constants to know this representation’s limits:

Node.js
MIN_VAULE: 5e-324
MAX_VALUE: 1.7976931348623157e+308

Despite the single storage format, JavaScript provides several literal formats.

Integer literals

Integer numbers can be represented with decimal, octal, and hexadecimal literals. Most frequently, decimal literals are used:

Node.js
var smallInt = 73;
var longInt = 12345678901234567;
var negInt = -162;

When the integer literal starts with 0, it is parsed as an octal literal, unless a digit out of the 0-7 range is detected, in this case, the number is ...