August 2005
Intermediate to advanced
840 pages
17h 29m
English
book
Web Standards Programmer's Reference: HTML, CSS, JavaScript®, Perl, Python®, and PHP
by Steven M. Schafer
Content preview from Web Standards Programmer's Reference: HTML, CSS, JavaScript®, Perl, Python®, and PHP
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,
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.
21.4. Traversing a Document's Nodes
Using the JavaScript bindings, it is fairly trivial to navigate through a document's nodes, as demonstrated in the examples that follow.
Example: Navigating and Reporting a Document's Object ModelThis example navigates through a document's nodes and returns the document's DOM. Source This example uses the document example from earlier in the chapter with scripting necessary to navigate the DOM: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html> <head> <title>DOM Walk and Display</title> <style type="text/css"> div.div1 { background-color: #999999; } div.div2 { background-color: #BBBBBB; } table, table * { border: thin solid black; } table { border-collapse: collapse; } td { padding: 5px; } </style> <script type="text/JavaScript"> var s = new String(); // Add node's children to the listing (String s) function showChildren(node,lvl) { // Only track elements (1), text (3), and the document (9) if ( node.nodeType == 1 || node.nodeType == 3 || node.nodeType == 9 ) { // Add dashes to represent node level for (var x = 0; x < lvl; x++) { s = s + "--"; } // Report first 20 chars for text nodes if ( node.nodeType == 3 ) { mynodeType = node.nodeValue; if (mynodeType.length > 20) { mynodeType = mynodeType.slice(0,16) + "..."; } } else { // Report "Element/Tag" for elements mynodeType = "Element/Tag"; } s = s + "+ " + node.nodeName + " (" + mynodeType + ")\n"; // If the node has children, ... |
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.