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Preliminary, last modified: 11/26/97.
Contents
Preface
This chapter introduces JavaScript, discusses some of the fundamental concepts of JavaScript in Navigator and provides basic examples. It shows JavaScript code in action, so you can begin writing your own scripts immediately, using the example code as a starting point.
JavaScript applications in the Navigator are largely event-driven. Events are actions that occur usually as a result of something the user does. For example, clicking a button is an event, as is changing a text field or moving the mouse over a link. For your script to react to an event, you define event handlers, such as onChange and onClick.
This chapter describes JavaScript objects in Navigator and how to use them. These client-side JavaScript objects are sometimes referred to as Navigator objects, to distinguish them from server-side objects or user-defined objects.
JavaScript lets you create and manipulate windows and frames for presenting HTML content. The window object is the top-level object in the JavaScript client hierarchy; Frame objects are similar to window objects, but correspond to "sub-windows" created with the FRAME tag in a FRAMESET document.
LiveConnect enables communication between JavaScript and Java applets in a page and between JavaScript and plug-ins loaded on a page. This chapter explains how to use LiveConnect in Netscape Navigator. It assumes you are familiar with Java programming.
This chapter describes some special concepts and applications that extend the power and flexibility of Navigator JavaScript.
This chapter describes the security models of the JavaScript language for Navigator 2.0 and later releases. This model was extended significantly between the Navigator 3.0 and Navigator 4.0 releases.
This chapter discusses values that JavaScript recognizes and describes the fundamental building blocks of JavaScript expressions: variables and literals.
This chapter describes JavaScript expressions and operators, including assignment, comparison, arithmetic, bitwise, logical, string, and special operators. It also describes regular expressions.
This chapter describes how to use objects, properties, functions, and methods, and how to create your own objects.
Several objects are predefined in core JavaScript and can be used in either client-side or server-side scripts. These objects are in addition to objects defined for server-side JavaScript and Navigator objects introduced in Chapter 3, "Using Navigator Objects." A handful of predefined functions can also be used in both client and server scripts.
JavaScript supports a compact set of statements that you can use to incorporate a great deal of interactivity in Web pages. This chapter provides an overview of these statements.
This appendix lists the reserved words in JavaScript.
The string literals in this appendix can be used to specify colors in the JavaScript alinkColor, bgColor, fgColor, linkColor, and vLinkColor properties and the fontcolor method.
A cookie is a small piece of information stored on the client machine in the cookies.txt file. This appendix discusses the implementation of cookies in the Navigator client; it is not a formal specification or standard.
LiveAudio is LiveConnect aware. This appendix describes how you use JavaScript to control embedded LiveAudio elements.
This appendix tells you how you can use JavaScript to filter your incoming mail and news when you use Netscape Messenger.
Last Updated: 11/26/97 09:25:20