ASP.NET AJAX in Action

Chapter 3. JavaScript for Ajax developers

In this chapter:

• JavaScript basics
• The JSON data format
• Object-oriented patterns in JavaScript
• Reflection on client objects
• Exposing events in JavaScript objects

Established in 1995 and initially integrated into the Netscape Navigator browser, JavaScript was capable of validating web-page user input without refreshing. Microsoft later packaged its own version, JScript, in Internet Explorer 3.0. In the following years, the language evolved, and developers began using it in conjunction with the Document Object Model (DOM) for Dynamic HTML pages. In 1998, the language was standardized as ECMAScript to facilitate the release of different versions.

Some JavaScript characteristics (weak typing, prototyping, ...