Tuesday, January 19, 2010

Chapter 2. Client-side JavaScript








 

 












Chapter 2. Client-side JavaScript





Client-side JavaScript is the name given to JavaScript code that is

embedded within an HTML file and executed by a web browser. In

addition to the core objects described in the previous section,

client-side JavaScript code has access to a number of other objects

that represent the web browser, the document displayed in the

browser, and the contents of that document. Client-side JavaScript

programs are usually event-based, which means that JavaScript

event handlers are executed in response to user

interactions with the browser and the document. The client-side

JavaScript scripting framework is powerful enough to open substantial

security holes in web browsers. For this reason, web browsers

typically restrict the actions of client-side scripts. This section

starts by explaining how JavaScript code is embedded in HTML files,

then goes on to introduce the client-side JavaScript objects,

JavaScript events and event handling, and JavaScript security

restrictions.
















     

     


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