26 Ví dụ cơ bản rất hữu ích cho các bạn mới học lập trình với flash

circle_mc.onRollOver = function() {
   this._alpha = 60;
};
circle_mc.onRollOut = function() {
   this._alpha = 100;
};

play_mc.onRelease = function() {
   plane_mc.play();
};

function flyPlane() {
   plane_mc.play();
}
play_mc.onRelease = flyPlane;

function flyPlane() {
   if (plane_mc._currentframe == 1) {
      plane_mc.play();
   }
}
play_mc.onRelease = flyPlane;

circle_mc.onRollOver = function() {
   this.onEnterFrame = function() {
      if (this._alpha > 60) {
         this._alpha -= 10;
      } else {
         delete this.onEnterFrame;
      }
   };
};
circle_mc.onRollOut = function() {
   this._alpha = 100;
};

var found:Boolean = false;

bee_mc.flying = true;

function unhide() {
   this.associatedClip._visible = true;
}
c0.associatedClip = box0;
c0.onRelease = unhide;

function unhide() {
   this.associatedClip._visible = true;
}
for (var i=0; i < 5; i++) {
   this["c"+i].associatedClip = this["box"+i];
   this["c"+i].onRelease = unhide;
}

var controlInfo:Array = [
   "wake up", 
   "eat lunch", 
   "go home", 
   "walk the dog"
   ];
function showText() {
   page_txt.text = this.mytext;
}
for (var i=0; i < 5; i++) {
   this["c"+i].mytext = controlInfo[i];
   this["c"+i].onRelease = showText;
}

var controlInfo:Array = [
   {ctl:wakeup_mc, text:"wake up", pic:alarm_mc},
   {ctl:eatlunch_mc, text:"eat lunch", pic:lunch_mc},
   {ctl:gohome_mc, text:"go home", pic:door_mc},
   {ctl:walkdog_mc, text:"walk the dog", pic:dog_mc},
   {ctl:sleep_mc, text:"fall asleep", pic:bed_mc}
   ];
function onClick() {
   page_txt.text = this.mytext;
   this.myclip._alpha = 50;
}
for (var i=0; i < controlInfo.length; i++) {
   controlInfo[i].ctl.mytext = controlInfo[i].text;
   controlInfo[i].ctl.myclip = controlInfo[i].pic
   controlInfo[i].ctl.onRelease = onClick;
}

var cInfo:Array = [
   {ctl:"wakeup_mc", text:"wake up", pic:"alarm_mc"},
   {ctl:"eatlunch_mc", text:"eat lunch", pic:"lunch_mc"},
   {ctl:"gohome_mc", text:"go home", pic:"door_mc"},
   {ctl:"walkdog_mc", text:"walk the dog", pic:"dog_mc"},
   {ctl:"sleep_mc", text:"fall asleep", pic:"bed_mc"}
   ];
function onClick() {
   page_txt.text = this.mytext;
   this.myclip._alpha = 50;
}
for (var i=0; i < cInfo.length; i++) {
   this[cInfo[i].ctl].mytext = cInfo[i].text;
   this[cInfo[i].ctl].myclip = frame_mc[cInfo[i].pic];
   this[cInfo[i].ctl].onRelease = onClick;
}

var xspeed:Number = 5;
function moveRight() {
   this._x += xspeed;
}    
ball.onEnterFrame = moveRight;

var xspeed:Number = 5;
var leftbound:Number = 0;
var rightbound:Number = 300;

function moveRightLeft() {
   this._x += xspeed;
   if (this._x > rightbound - this._width) {
      this._x = rightbound - this._width;
      xspeed *= -1;
   } else if (this._x < leftbound) {
      this._x = leftbound;
      xspeed *= -1;
   }
}

ball.onEnterFrame = moveRightLeft;

var xspeed:Number;
var leftbound:Number = 0;
var rightbound:Number = 300;

function randomBetween(a:Number, b:Number):Number {
   return a + Math.floor(Math.random()*(b-a+1));
}

function moveRightLeftRandom() {
   this._x += xspeed;
   if (this._x > rightbound - this._width) {
      this._x = rightbound - this._width;
      xspeed = -1 * randomBetween(5, 10);
   } else if (this._x < leftbound) {
      this._x = leftbound;
      xspeed = randomBetween(5, 10);
   }
}

xspeed = randomBetween(5, 10);
ball.onEnterFrame = moveRightLeftRandom;

var bounds:Object = {L:0, T:0, R:300, B:200};
var xspeed:Number = 5;
var yspeed:Number = 5;

function moveInBounds() {
   this._x += xspeed;
   this._y += yspeed;
   if (this._x > bounds.R - this._width) {
      this._x = bounds.R - this._width;
      xspeed = -xspeed;
   } else if (this._x < bounds.L) {
      this._x = bounds.L;
      xspeed = -xspeed;
   } else if (this._y > bounds.B - this._height) {
      this._y = bounds.B - this._height;
      yspeed = -yspeed;
   } else if (this._y < bounds.T) {
      this._y = bounds.T;
      yspeed = -yspeed;
   }
}

ball.onEnterFrame = moveInBounds;

dragger_mc.onPress = function() {
   this.startDrag(false, 50, 40, 250, 140);
};

dragger_mc.onRelease = 
dragger_mc.onReleaseOutside = function() {
   this.stopDrag();
};

dragger_mc.onPress = function() {
   this.startDrag();
}
dragger_mc.onRelease =
dragger_mc.onReleaseOutside = function() {
   this.stopDrag();
   if (this.hitTest(target_mc)) {
      target_mc._alpha = 50;
   } else {
      target_mc._alpha = 100;
   }
};

var loader:MovieClipLoader = new MovieClipLoader();
function onLoadProgress(_mc, loaded, total) {
   var pct:Number = Math.round(loaded / total * 100);
   bar_mc._xscale = pct;
};
function onLoadInit(_mc) {
   bar_mc._visible = false;
   _mc._xscale = _mc._yscale = 50;
   _mc._visible = true;
};
loader.addListener(this);
bar_mc._xscale = 0;
holder_mc._visible = false;
loader.loadClip("somepic.jpg", holder_mc);

var loader:MovieClipLoader = new MovieClipLoader();
function onLoadProgress(_mc, loaded, total) {
   var pct:Number = Math.round(loaded / total * 100);
   pct_txt.text = pct + "%";
};
function onLoadInit(_mc) {
   pct_txt.text = "";
   _mc.init();
};
loader.addListener(this);
loader.loadClip("movies/mymovie.swf", player_mc);

var loader:MovieClipLoader = new MovieClipLoader();
var lis:Object = {};
lis.onLoadProgress = function(_mc, loaded, total) {
   var pct:Number = Math.round(loaded / total * 100);
   preloader_mc.gotoAndStop(pct);
};
lis.onLoadInit = function(_mc) {
   preloader_mc._visible = false;
   _mc.play();
};
loader.addListener(lis);
loader.loadClip("movie.swf", player_mc);

var lv:LoadVars = new LoadVars();

lv.onData = function(thetext:String) {
   page_txt.text = thetext;
}

lv.load("thetextfile.txt"); 

var lv:LoadVars = new LoadVars();
var paintcolors:Array = [];

lv.onLoad = function(success:Boolean) {
   if (success) {
      var i:Number=0;
      while (this["name"+i]!=undefined) {
         paintcolors.push({ 
            myname:this["name"+i], 
            mycolor:parseInt(this["val"+i], 16)
         });
         i++;
      }
   } else {
      trace('problem reading file');
   }
};

lv.load("paintcolors.txt");  

var lv:LoadVars = new LoadVars();
var paintcolors:Array = [];

function setcolors() {
   var c:Color;
   for (var i=0; i < paintcolors.length; i++) {
      c = new Color(this["swatch"+i].dot);
      c.setRGB(paintcolors[i].mycolor);
      this["swatch"+i].name.text = paintcolors[i].myname;
   }
}

lv.onLoad = function(success:Boolean) {
   if (success) {
      var i:Number=0;
      while (this["name"+i]!=undefined) {
         paintcolors.push({ 
            myname:this["name"+i], 
            mycolor:parseInt(this["val"+i], 16)
         });
         i++;
      }
      setcolors();
   } else {
      trace('problem reading file');
   }
};

lv.load("paintcolors.txt");  

var colorxml:XML = new XML();
var paintcolors:Array = [];

function setcolors() {
   var c:Color;
   for (var i=0; i < paintcolors.length; i++) {
      c = new Color(this["swatch"+i].dot);
      c.setRGB(paintcolors[i].mycolor);
      this["swatch"+i].name.text = paintcolors[i].myname;
   }
}

colorxml.onLoad = function(success:Boolean) {
   if (success) {
      var colors:Array = this.firstChild.childNodes;
      for (var i=0; i < colors.length; i++) {
         paintcolors.push({ 
            myname:colors[i].attributes.name,
            mycolor:parseInt(colors[i].attributes.val, 16)
         });
      }
      setcolors();
   } else {
      trace('problem reading file');
   }
};

colorxml.ignoreWhite = true;
colorxml.load("paintcolors.xml");