JavaScript Recipes: A Problem-Solution Approach

© Russ Ferguson and Keith Cirkel 2017

Russ Ferguson and Keith Cirkel, JavaScript Recipes, 10.1007/978-1-4302-6107-0_1

1. Working with JavaScript Datatypes

Russ Ferguson¹  and Keith Cirkel²

(1)Ocean, New Jersey, USA

(2)London, UK

Electronic supplementary material

The online version of this chapter (doi:10.​1007/​978-1-4302-6107-0_​1) contains supplementary material, which is available to authorized users.

Assigning Variables with the var Statement

Problem

When programming (just like in algebra), you need to be able to assign a variable piece of data to a keyword that you can reference in your code, for example x = 5.

Solution

With JavaScript, variable assignment needs to be declared using a keyword, which helps to determine the behavior of a variable. The ...