October 1998
Intermediate to advanced
95 pages
4h 36m
English
Content preview from JavaScript Pocket Reference
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JavaScript Pocket Reference
example, to define functions in the <head> of a top-level win-
dow, and then have scripts and event handlers in nested
frames call those functions using the
top property:
// Code in a frame calls code in the top-level window.
top.stop_scrolling();
The Document Object
Every Window object has a document property that refers to a
Document object. The Document object is arguably more
important than the Window object itself: while the Window
represents the browser window, the Document object repre-
sents the HTML document that is displayed in that window.
The Document object has various properties that refer to
other objects which allow access to and modification of doc-
ument content. The way that document content is accessed
and modified is called the document object model, or DOM,
and there are several DOMs in existence:
Legacy DOM
The original legacy document object model evolved
along with early versions of the JavaScript language. It is
well supported by all browsers, but allows access only to
certain key portions of documents, such as forms, form
elements, and images.
W3C DOM
This document object model allows access and modifica-
tion of all document content and is standardized by the
World Wide Web Consortium (W3C). It is at least par-
tially supported by Netscape 6 and later, Internet
Explorer 5 and later, and other modern browsers. The
W3C DOM is not closely compatible
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.