jquery - Multiple image animation in javascript -

i learning , tackling hardest piece of javascript have tried date. want create multiple animated sliding images, 1 sliding left right , straight after sliding right left.

i have achieved 1 sliding image left right can not add image sliding right left.

<canvas id="canvas" width="1600" height="300"></canvas> <script> window.requestanimframe = (function(){ return  window.requestanimationframe       || window.webkitrequestanimationframe || window.mozrequestanimationframe    || window.orequestanimationframe      || window.msrequestanimationframe     || function( callback ){     window.settimeout(callback, 1000 / 60); }; })();  var canvas = document.getelementbyid("canvas"), cx = canvas.getcontext("2d");  function card(x,y){ this.x = x || -300; this.y = y || -300; this.width = 500; this.height = 0; this.img=new image();  this.init=function(){  // makes mycard available in img.onload function // otherwise "this" inside img.onload refers img var self=this;  this.img.onload = function()  {     // getting width , height of image     self.width = this.width;     self.height = this.height;     self.draw();      loop();  } this.img.src = "f15ourbase.png";   }  this.draw = function(){ cx.drawimage(this.img, this.x, this.y); }  }  var mycard = new card(50,50); mycard.init();  function loop(){  if((mycard.x + mycard.width) < canvas.width){ requestanimframe(loop);  } else {  // starting again after 5 seconds settimeout(function() {    // resetting card old state    mycard.x = 50;    mycard.y = 50;    // call loop again    loop(); }, 20000); // 5000ms = 5 seconds, 20 seconds, use 20000   }  cx.clearrect(0, 0, canvas.width, canvas.height);  mycard.x = mycard.x + 15;  mycard.draw();  } </script>