JavaScript Design

Chapter 6. Building and Calling Functions

CONTENTS>>

• Methods and Functions

• Creating Functions

• Firing Functions with Event Handlers

• The return Statement

• Using Functions as Data

• Properties in Functions

• Methods in Functions

In discussing the different structures, objects, statements, operators, and expressions in JavaScript, you have seen several examples using functions. Chapter 3, “Dealing with Data and Variables,” explained global and local variables and discussed how local variables are defined inside of function definitions. Chapter 1, “Jump-Starting JavaScript,” showed how JavaScript in the deferred mode uses functions with event handlers to enable the designer to build a page that responds to the user’s actions with input devices. This chapter ...