By Jeffrey Sambells

ISBN-10: 1590598563

ISBN-13: 9781590598566

As an online clothier or developer, you know the way robust DOM scripting is for reinforcing websites and functions, including dynamic performance and enhancing the person event. you have got an affordable knowing of JavaScript and the DOM, yet now you need to take your talents additional. This ebook is all you have to do soit exhibits you ways so as to add crucial performance in your web content, akin to at the fly structure and magnificence adjustments, interface personalization, maps and seek utilizing APIs, visible results utilizing JavaScript libraries, and lots more and plenty more.

  • Includes a short recap of the fundamentals, for reference purposes.
  • Packed with genuine international JavaScript strategies from starting to end
  • Written by way of "Beginning Google Maps" writer Jeffrey Sambells, and encompasses a case learn through JavaScript guru Aaron Gustafson.

What you’ll learn

  • A speedy recap of the HTML and CSS DOM, equipment, and events.
  • Shows you the fundamentals of ways so as to add dynamic results and reply to consumer activities in your sites utilizing CSS and JavaScript.
  • Introduces Ajax to the combo, exhibiting you ways to exploit it, and whilst to not use it.
  • Learn most sensible practices (such as swish degredation) and productiveness development through code reuse (libraries and APIs)
  • Create Mashups utilizing seek, picture and mapping APIs.
  • Build greater, extra dynamic consumer reports utilizing libraries comparable to Prototype and Scriptaculous.

Who this booklet is for

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

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Extra info for AdvancED DOM Scripting: Dynamic Web Design Techniques

Example text

10 DO IT RIGHT WITH BEST PRACTICES You may have noticed the use of this to refer to the tag from within the onclick event attribute. In JavaScript, this is used to control the context of the function and refers to the owner of the object, so in this case, the tag owns the onclick event attribute. 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.

You can imagine the situation where you need to ask someone a question and just calling out a name will either get several responses or no response. This can be avoided in your code by using namespaces, one of the most often overlooked yet easily implemented things in JavaScript. 0 comes into wide use, I’m not talking about real namespaces but rather a little trick that can give you your own little world within the script. As you’ll learn later, JavaScript doesn’t complain when you declare a function multiple times; it simply uses the last declared version.

To keep your $() function to yourself, you can employ some JavaScript trickery. The trick in question is a self-executing anonymous function, which looks like this: (function(){ //your code })(); You may have seen this before and wondered what was going on; really, it’s quite elegant. The first enclosing parentheses around the function ( function() {} ) returns the unnamed function to the script, and the empty set of parentheses executes the returned unnamed function right away. It may be a little easier to understand if I throw in an argument as well: (function(arg){ alert(arg); })('This will show in the alert box'); This same idea of fake namespaces can also be accomplished through slightly different objects’ syntaxes, but they are all trying to accomplish the same task of keeping your code contained in its own little space.

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AdvancED DOM Scripting: Dynamic Web Design Techniques by Jeffrey Sambells

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