© 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 Ferguson 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


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.


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

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