Download AdvancED DOM Scripting: Dynamic Web Design Techniques by Jeffrey Sambells PDF

By Jeffrey Sambells

As an internet dressmaker or developer, you understand how robust DOM scripting is for boosting web content and purposes, including dynamic performance and enhancing the person event. you might have an affordable realizing of JavaScript and the DOM, yet now you must take your talents additional. This ebook is all you have to do soit exhibits you the way so as to add crucial performance for your websites, comparable to at the fly structure and elegance adjustments, interface personalization, maps and seek utilizing APIs, visible results utilizing JavaScript libraries, and masses more.

  • Includes a short recap of the fundamentals, for reference purposes.
  • Packed with genuine global JavaScript recommendations from starting to end
  • Written by means of "Beginning Google Maps" writer Jeffrey Sambells, and incorporates a case research via JavaScript guru Aaron Gustafson.

What you’ll learn

  • A fast recap of the HTML and CSS DOM, tools, and events.
  • Shows you the fundamentals of ways so as to add dynamic results and reply to person activities for your sites utilizing CSS and JavaScript.
  • Introduces Ajax to the combo, displaying you the way to exploit it, and while to not use it.
  • Learn most sensible practices (such as sleek degredation) and productiveness development through code reuse (libraries and APIs)
  • Create Mashups utilizing seek, photograph and mapping APIs.
  • Build higher, extra dynamic consumer stories utilizing libraries equivalent to Prototype and Scriptaculous.

Who this e-book is for

This e-book is for intermediate to complex net designers and builders who have already got an affordable to stable wisdom of HTML, CSS, and JavaScript.

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Additional info for AdvancED DOM Scripting: Dynamic Web Design Techniques

Example text

Html, the correct value is maintained in the alert, because the external scope of the onclick event is now the registerListener() function, which maintains an internal scope with the unique value for i in each instance, as illustrated in Figure 1-6. 37 CHAPTER 1 Figure 1-6. html, would alert My id is anchorX and initAnchors i is 6. That’s because, again, the i value isn’t defined in the registerListener() event listener, so it retrieves it from the initAnchors() scope as illustrated in Figure 1-7.

From within your ADS namespace, you can simply use $() without the prefix. It’s a fairly simple idea, but in a large complicated library, the savings will be obvious. $() function you’ve implemented allows you to request more than one element and retrieve an array containing those elements. $( 'a' , 'b' , 'c' , 'd' ); for ( e in elements ) { // Do something` } It’s also a great addition to your library methods where you need to pass in a reference to a DOM element. $('id')); Just remember that, if you’re writing code within the namespace, you don’t need to include the ADS prefix, but any other code you write outside the namespace will need to include the prefix.

We’ll discuss this in more detail later in this book. Now that you understand the different ways of writing inline event listeners—by avoiding the use of javascript: coded directly into href attributes and using the appropriate functions assigned to event attributes—forget that I ever told you about inline event attributes. Showing you the evolution of the different methods from javascript: to the onclick event attribute is necessary so that you can see the benefits of the next solution. Remember you want to separate your behavior from your markup structure and inline event handlers don’t achieve that.

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