edoardo zari's Public Library

portable, searchable, and more affordable
more than 15 million users
4 more annotations...
- subscriber uses at least seven books a month
- The new UI is slicker and faster
- Searches saved as "smart folders"
- Embrace and encourage standards

28 Oct 09

Gartner Identifies the Top 10 Strategic Technologies for 2010

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technology future gartner

y as one with the potential for significant impact on the enterprise in the next three years. Factors that denote significant impact include a high potential for disruption to IT or the business, the need for a major dollar investment, or the risk of being late to adopt.

These technologies impact the organization's long-term plans, pro

23 Oct 09

Safari Books Online - 9781933988351 - jQuery in Action

my.safaribooksonline.com/...ch03lev2sec3 - Preview

onto all elements in the wrapped set
String|Object|Function
5 more annotations...
- any JavaScript expression that results in a value, or it can be a function
- function is invoked, it's passed a single parameter that contains the zero-based index of the element
- this.id
- multiple attributes at a time
- { value: '', title: 'Please enter a value' }

22 Oct 09

Safari Books Online - 9781933988351 - jQuery in Action

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get new wrapped sets from an existing set
alt or a title attribute
30 more annotations...
- clone() method returns this second set as its result
- ,img[title]
- same set of elements with
- .add('img[title]')
- back up the wrapped set to a previously returned set
- can be a jQuery selector
- If an HTML fragment, the appropriate elements are created
- DOM elements, they are added to the set
- all elements that contain the passed string anywhere within its body content
- andSelf(), which merges the two topmost sets on the stack into a single wrapped set
- the string test is applied
  to all aspects of the body content, including markup and attribute values of children elements
- The is() method returns true if at least one element matches the selector, and false if not.
- this.alt=
- an element reference in a variable named someElement
- .add(someElement)
- new Array();
- allAlts.push
- can also use it to add new elements by passing it a string containing HTML markup
- .not('
- String|Element|Array
- filter() method, when passed a function, invokes that function for each wrapped element and removes any element whose function invocation returns the value false
- this.
- a jQuery selector
- r a function that makes the filtering decision
- filter selectors with an implied element type
- operates in the inverse manner than the corresponding not() method, removing any elements that do not match the passed selecto
- based on the position of elements within the set
- Number
- Number
- optional

21 Oct 09

Safari Books Online - 9781933988351 - jQuery in Action

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The parameter passed to this function is set to the zero-based index of the element within the set
this.alt=

Safari Books Online - 9781933988351 - jQuery in Action

my.safaribooksonline.com/...ch01 - Preview

attr() command can be used either as a read or as a write operation
number and types of parameters passed into the command determine the variant
7 more annotations...
- refine, extend, or subset the set of wrapped elements
- to be fetched
- undefined
- nonstandard attribute name such as custom
- will cause your markup to be considered invalid
- helpful shortcuts
- The wrapped set.

20 Oct 09

Safari Books Online - 9781933988351 - jQuery in Action

my.safaribooksonline.com/...ch01 - Preview

jquery

supporting not only the common selectors currently used in CSS, but also the more powerful ones not yet fully implemented by most browsers
move it to a script block in the <head> section of the page, outside the scope of the document body,
42 more annotations...
- getElementById('testButton').onclick
- $() function (an alias for the jQuery() function)
- returns a special JavaScript object containing an array of the DOM elements that match the selector
- The $()
- CSS class
- .notLongForThisWorld
- each function works on all of the elements matched by the original selector, there's no need to loop over the array of elements
- #someElement
- ID selector
- links with a class of specialClass
- within <p> elements
- jQuery doesn't depend upon the CSS implementation of the browser
- $. prefix looks weird to you, remember that $ is an identifier like any other in JavaScript. Writing a call to the same function using the jQuery identifier
- utility functions in jQuery documentation, it's clear that they are actually methods of the $() function
- direct child
- separated by the right angle bracket character (>)
- By passing a function to $(), we instruct the browser to wait until the DOM has fully loaded (but only the DOM) before executing the code.
- .insertAfter
- jQuery was designed to be easily extended with additional functionality
- $.fn.disable = function() {
- $.fn.disable means that we're extending the $ wrapper with a function called disable
- this is the collection of wrapped DOM elements that are to be operated upon.
- Other JavaScript libraries, most notably the popular Prototype library, use the $ name for their own purposes
- jQuery.noConflict();
- $ to that defined by the non-jQuery library
- The nth-child selector starts counting from 1, whereas the other selectors start counting from 0. For CSS compatibility
- match by attribute will only check the initial state of the control as specified in the HTML markup
- any button
- type=checkbox
- containing the text foo
- type=image
- input, select, textarea, button
- option elements
- :checkbox:checked:enabled
- These filters are an immensely useful addition
- We can apply the :not filter to filter selectors, but not to find selectors
- ilter selectors are easily identified because they all begin with a colon character (:) or a square bracket character ([)
- A jQuery plugin provides some basic XPath support that can be used together with jQuery's
- typical / and // selectors
- * selector to represent any element
- the parent selector ..
- XPath attribute selectors