AdvancED DOM Scripting: Dynamic Web Design Techniques by Jeffrey Sambells

By Jeffrey Sambells

As an online fashion designer or developer, you understand how strong DOM scripting is for boosting websites and purposes, including dynamic performance and bettering the consumer adventure. you will have a cheap figuring out of JavaScript and the DOM, yet now you need to take your talents additional. This e-book is all you have to do soit exhibits you ways so as to add crucial performance on your web content, similar to at the fly format and elegance adjustments, interface personalization, maps and seek utilizing APIs, visible results utilizing JavaScript libraries, and lots more and plenty more.

  • Includes a brief recap of the fundamentals, for reference purposes.
  • Packed with actual international JavaScript ideas from starting to end
  • Written by means of "Beginning Google Maps" writer Jeffrey Sambells, and incorporates a case examine through JavaScript guru Aaron Gustafson.

What you’ll learn

  • A fast recap of the HTML and CSS DOM, equipment, and events.
  • Shows you the fundamentals of the way so as to add dynamic results and reply to consumer activities on your sites utilizing CSS and JavaScript.
  • Introduces Ajax to the combo, exhibiting you the way to take advantage of 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, picture and mapping APIs.
  • Build larger, extra dynamic person stories utilizing libraries similar to Prototype and Scriptaculous.

Who this booklet is for

This booklet is for intermediate to complex internet designers and builders who have already got an affordable to stable wisdom of HTML, CSS, and JavaScript.

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Extra info for AdvancED DOM Scripting: Dynamic Web Design Techniques

Sample text

ToggleDisplay() method Another action you’ll be often implementing is toggling the display of elements in the DOM tree. It’s a fairly simple bit of code, but extracting it out into a common function will reduce unnecessary repetition. $('example')); the elements display property will be toggled between none and empty (which is the default). $('example'),'inline'); Reusing a small bit of code like this may seem silly, but doing so will greatly increase the readability of your code—it’s obvious where you’ll be toggling simply by referencing the name of the method.

In addition to the var keyword, including the variable in the function signature, as in the following line, is the same as including var—the variable is contained within the scope of the function: functionmyFunction(myVariable) { ... } Closure is related to scope and refers to how an internal function has access to the properties of its external function, even after the external function has finished executing and terminated. When you reference a variable or method, JavaScript tries to resolve the scope by following the scope chain through the object’s execution path looking for the most recent value of the variable.

Keeping single quotes for JavaScript and double quotes for (X)HTML attributes makes it much easier and nicer to mix the two.

  1. Foo
  2. Bar

'; If you do, it will cause a parse error, as the line breaks will be interpreted as a semicolon (;).

\

    \

  1. Foo
  2. \

  3. Bar
  4. \

'; Just remember that this will preserve the white space and indention in the string, and it could have adverse effects if you are trying to compress your code with a third-party compression tool.

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