Random Range

protected function getRandRange(minNum: Number, maxNum: Number):Number {    return (Math.floor(Math.random() * (maxNum - minNum + 1)) + minNum);   } protected function getDistance(p1: Point, p2: Point): Number {    var dx: Number = p1.x - p2.x;    var dy: Number = p1.y - p2.y;    return Math.sqrt(dx*dx + dy*dy);   }

Optimizing Performance for the Adobe Flash Platform

Here are the chapters :

1. Introduction
2. Conserving memory
3. Minimizing CPU usage
4. ActionScript 3.0 performance
5. Rendering performance
6. Optimizing network interaction
7. Working with media
8. SQL Database performance
9. Benchmarking and deploying

Link HTML
PDF PDF

Unload content from SwfLoader Flex

Use:

(swfLoader.content.parent as Loader).unload();

To remove the content loaded into SwfLoader

jQuery Plugin Structure

Main Structure

//You need an anonymous function to wrap around your function to avoid conflict (function($){ //Attach this new method to jQuery $.fn.extend({ //This is where you write your plugin's name pluginname: function() { //Iterate over the current set of matched elements return this.each(function() { //code to be inserted here }); } }); //pass jQuery to the function, //So that we will able to use any valid Javascript variable name //to replace "$" SIGN. But, we'll stick to $ (I like dollar sign: ) ) })(jQuery);

Plugin with Options:

(function($){   $.fn.extend({        //pass the options variable to the function    pluginname: function(options) {    //Set the default values, use comma to separate the settings, example:    var defaults = {     padding: 20,     mouseOverColor : '#000000',     mouseOutColor : '#ffffff'    }         var options =  $.extend(defaults, options);       return this.each(function() {     var o = options;          //code to be inserted here     //you can access the value like this     alert(o.padding);           });      }  });   })(jQuery);

Example: The animateMenu Plugin

* animatePadding : Set the padding value for the animate effect
* defaultPadding : Set the default padding value
* evenColor : Set the color this color if index value is even number
* oddColor : Set the color this color if index value is odd number

(function($){  $.fn.extend({    //plugin name - animatemenu   animateMenu: function(options) {    //Settings list and the default values    var defaults = {     animatePadding: 60,     defaultPadding: 10,     evenColor: '#ccc',     oddColor: '#eee'    };        var options = $.extend(defaults, options);          return this.each(function() {     var o =options;          //Assign current element to variable, in this case is UL element     var obj = $(this);              //Get all LI in the UL     var items = $("li", obj);            //Change the color according to odd and even rows     $("li:even", obj).css('background-color', o.evenColor);          $("li:odd", obj).css('background-color', o.oddColor);                   //Attach mouseover and mouseout event to the LI       items.mouseover(function() {      $(this).animate({paddingLeft: o.animatePadding}, 300);           }).mouseout(function() {      $(this).animate({paddingLeft: o.defaultPadding}, 300);     });            });      }  }); })(jQuery);

#$(document).ready(function() {
# $('#menu').animateMenu({animatePadding: 30, defaultPadding:10});
#});


# ul id="menu"
# li>Home
# li>Posts
# li>About
# li>Contact
# ul


Ref link: http://www.queness.com/post/112/a-really-simple-jquery-plugin-tutorial

Common gesture and touch descriptions

Pan
Move a finger left-to-right or right-to-left. Some devices require two fingers to pan.

Rotate
Touch two fingers down, then move them around in a circle (as if they’re both simultaneously tracing an imaginary circle on a surface). The pivot point is set at the midpoint between the two finger touch points.

Swipe
Move three fingers left-to-right or right-to-left, top-to-bottom, or bottom-to-top, quickly.

Zoom
Touch two fingers down, then move them away from each other to zoom in and toward each other to zoom out.

Press-and-tap
Move or press one finger, then tap the surface with another.