November 2001
Intermediate to advanced
936 pages
68h 43m
English
Content preview from JavaScript: The Definitive Guide, Fourth EditionBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.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.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.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.
Chapter 14. The Document Object
Every Window object has a
document
property. This property refers to a Document object that represents
the HTML document displayed in the window. The Document object is
probably the most commonly used object in client-side JavaScript.
We’ve already seen several examples in this book that use the
write( ) method of the Document object to insert
dynamic content into a document while it is being parsed. In addition
to the frequently used write( ) method, the
Document object defines properties that provide information about the
document as a whole: its URL, its last-modified date, the URL of the
document that linked to it, the colors in which it is displayed, and
so on.
Client-side JavaScript exists to turn static HTML documents into
interactive programs -- it is the Document object that gives
JavaScript interactive access to the content of otherwise static
documents. In addition to the properties that provide information
about a document as a whole, the Document object has a number of very
important properties that provide information about document content.
The forms[]
array, for instance, contains Form objects that represent all the
HTML forms in the document. And the
images[]
and applets[]
arrays contain objects that represent the images and applets in the
document. These arrays and the objects they contain open up a world
of possibilities for client-side JavaScript programs, and the bulk of
this chapter is devoted to documenting them.
This chapter ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
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.