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Index
jQuery Essentials Credits About the Author About the Reviewers www.PacktPub.com Support files, eBooks, discount offers, and more Why subscribe? Free access for Packt account holders Preface What this book covers What you need for this book Who this book is for Conventions Reader feedback Customer support Downloading the example code Errata Piracy Questions 1. jQuery Part by Part Life before jQuery Why was jQuery created? The major components of jQuery The DOM selection DOM manipulation Events Form CSS and animation Ajax Helpers Why are there two maintained versions of jQuery? The difference between minified and un-minified versions What is a content delivery network? Summary 2. jQuery Selectors and Filters jQuery selectors The chapter code Protocol-relative URLs The jQuery object Creating selectors ID selectors Class selectors Tag selectors Combining selectors Descendent selectors Attribute selectors Creating basic filter selectors Content filters Using chaining to quickly and neatly continue queries Summary 3. Manipulating the DOM Dimensions and positions Examples Developer tools Reading the size of the screen and elements Classes and styles The JSON object Behavior classes Attributes and properties Keeping images proportional Removing attributes and properties Summary 4. Events The ready event Hooking events Unhooking events Namespacing events The event handler The event object event.target event.relatedTarget event.type event.which event.metaKey event.pageX and event.pageY event.originalEvent Passing data to an event Event shorthand methods Creating your own events Triggering events The death of the .live() and .die() methods Looking deeper at .on() Summary 5. Making Your Site Snazzy with jQuery The importance of animations Hiding and showing elements .fadeOut() .fadeIn() .fadeToggle() Sliding elements around .slideUp() .slideDown() .slideToggle() Creating custom effects .animate() .delay() .queue(), .dequeue(), and .clearQueue() .stop() and .finish() jQuery.fx.interval and jQuery.fx.off Using effects correctly Summary 6. Better Forms with jQuery Employing form methods .submit() .focus() .blur() .focusin() and .focusout() .change() .select() Tooltips Placeholder Enabling and disabling elements Validation Filtering out unwanted characters Summary 7. Talking to Your Server Before jQuery How jQuery helps us Loading HTML – .load() Loading JSON Data – .getJSON() Loading and executing JavaScript – getScript() Reading and writing data: jQuery.get() and .jQuery.post() Helper methods Creating query data – $.param() Creating query data from a form – .serialize() Creating an object from form data – .serializeArray() Ajax events When an Ajax request begins – .ajaxStart() When an Ajax request completes – .ajaxStop() When an Ajax request sends data – .ajaxSend() When an Ajax request fails – .ajaxError() When an Ajax request succeeds – .ajaxSuccess() When an Ajax request finishes – .ajaxComplete() Summary 8. Writing Code that You can Read Later Separation of concerns Breaking code into logical units Using events to decouple code Using unit tests Why write unit tests at all? Summary 9. Faster jQuery Writing performance tests Measuring jQuery jQuery selectors Using IDs over other selectors Caching your selectors Optimizing selectors Right to left Reducing overly specific selectors Narrowing your search Other jQuery optimizations Updating to the latest version Using the correct version of jQuery Don't use deprecated methods Using preventDefault() when appropriate Never modify the DOM in a loop jQuery isn't always the answer Using document.getElementById Using CSS Summary 10. Benefiting from the Work of Others with Plugins Finding plugins Installing plugins Updating a plugin Uninstalling plugins Adding a plugin jQuery UI jQuery UI Interactions jQuery UI widgets The jQuery UI widget factory Writing your own plugin Prep work The plugin Best practices Preserve chaining Use an IIFE Add only one function to jQuery Let the user theme it Test, test, test Document it Minify it Summary Index
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