JavaScript Quick Syntax Reference

CHAPTER 2

Variables

Variables are containers used for storing data, such as numbers or strings, so that they can be used multiple times in a script.

Declaring Variables

To create a variable the var keyword is used followed by a name, called the identifier. A common naming convention for variables is to have each word initially capitalized, except for the first one.

var myVar;

A value can be assigned to a variable by using the equals sign, which is called the assignment operator (=). This is called assigning or initializing the variable.

myVar = 10;

The declaration and assignment can be combined into a single statement. When a variable is assigned ...