JavaScript Design

Statements in Sequential Structures

Sequential structures refer to the order in which the code is entered into a JavaScript program. In one sense, all code is sequential, but I am using the structure to differentiate it from statements that loop or conditionally execute lines of code.

Variable Declarations and Assignments

A simple statement that declares a variable using var is all that a variable declaration does. Typically, a variable is declared and assigned a value at the same time; however, technically, the two types of statements are different. For example, a perfectly legitimate variable declaration is this one:

							var myFineVariable; //Declaration 

Later in the script, the developer may assign a value to the declared variable. For example, ...