Chapter: Internet & World Wide Web HOW TO PROGRAM - The Ajax Client - JavaScript: Events

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JavaScript: Events

In this chapter, we discuss how to set up functions to react when an event fires (occurs).

Chapter 13

JavaScript: Events

 

Introduction

 

We’ve seen that XHTML pages can be controlled via scripting, and we’ve already used a few events to trigger scripts, such as the onclick and onsubmit events. This chapter goes into more detail on JavaScript events, which allow scripts to respond to user interactions and modify the page accordingly. Events allow scripts to respond to a user who is moving the mouse, entering form data or pressing keys. Events and event handling help make web applications more responsive, dynamic and interactive.

 

In this chapter, we discuss how to set up functions to react when an event fires (occurs). We give examples of event handling for nine common events, including mouse events and form-processing events. A the end of the chapter, we provide a table of the events covered in this chapter and other useful events.


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