JavaScript Information

What is JavaScript?

JavaScript is Netscape's cross-platform, object-based scripting language for client and server applications. There are two types of JavaScript:

• Navigator JavaScript, also called client-side JavaScript
• LiveWire JavaScript, also called server-side JavaScript

JavaScript in Navigator

Netscape Navigator 2.0 (and later versions) can interpret JavaScript statements embedded in an HTML page. When Navigator requests such a page, the server sends the full content of the document, including HTML and JavaScript statements, over the network to the client. The Navigator then displays the HTML and executes the JavaScript, producing the results that the user sees. This process is illustrated in the following figure.

Client-side JavaScript statements embedded in an HTML page can respond to user events such as mouse-clicks, form input, and page navigation. For example, you can write a JavaScript function to verify that users enter valid information into a form requesting a telephone number or zip code. Without any network transmission, the HTML page with embedded JavaScript can check the entered data and alert the user with a dialog box if the input is invalid.Lead Generation

JavaScript in LiveWire LiveWire is an application development environment that uses JavaScript for creating server-based applications similar to CGI (Common Gateway Interface) programs. In contrast to Navigator JavaScript, LiveWire JavaScript applications are compiled into bytecode executable files. These application executables are run in concert with a Netscape server (version 2.0 and later) that contains the LiveWire server extension.

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The LiveWire server extension generates HTML dynamically; this HTML (which may also include client-side JavaScript statements) is then sent by the server over the network to the Navigator client, which displays the results. This process is illustrated in the following figure.

For more information on LiveWire, see the LiveWire Developer's Guide.

In contrast to standard CGI programs, LiveWire JavaScript is integrated directly into HTML pages, facilitating rapid development and easy maintenance. LiveWire JavaScript contains an object framework that you can use to maintain data that persist across client requests, multiple clients, and multiple applications. LiveWire JavaScript also provides objects and methods for database access that serve as an interface to Structured Query Language (SQL) database servers.- world of warcraft powerleveling EU::wow powerleveling EU::wow power leveling US::world of warcraft power leveling US::

JavaScript, the language As described in the previous sections, client and server JavaScript differ in numerous ways, but they have the following elements in common:

• Keywords, statement syntax, and grammar
• Rules for expressions, variables, and literals
• Underlying object model (although Navigator and LiveWire have different object frameworks)
• Built-in objects and functions

VOIP Phone Service Different versions of JavaScript work with specific versions of Navigator. For example, JavaScript 1.1 is for Navigator 3.0.

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