javascript - Fullscreen option -


i trying provide full screen option in web-page when user presses "space" , "enter" keys simultaneously. have following code. have following code. not working. going wrong? working if give single key. 

<!doctype html> <html> <head>   <title>full screen example</title>   <style type="text/css">       :-webkit-full-screen #myimage {       width: 100%;       height: 100%;     }   </style> </head> <body>   <p>press "space" , "enter" enter full screen</p>   <p><strong>to use full-screen mode, need firefox 9 or later or chrome 15 or         later.</strong></p>   <img src = "./3.jpg" width="640" height="360" id="myimage"> </body> <script> var imageelement = document.getelementbyid("myimage");  function togglefullscreen() {     if (!document.mozfullscreen && !document.webkitfullscreen) {         if (imageelement.mozrequestfullscreen) {             imageelement.mozrequestfullscreen();         } else {             imageelement.webkitrequestfullscreen(element.allow_keyboard_input);         }     } else {         if (document.mozcancelfullscreen) {             document.mozcancelfullscreen();         } else {             document.webkitcancelfullscreen();         }     } }  document.addeventlistener("keydown", function(e) {     if ((e.keycode == 13) && (e.keycode == 32)) {         togglefullscreen();     } }, false); </script>

remove current addeventlistener() call , augment script i've provided below. note won't work in ie8 (but considering you're using moz , webkit functions imagine aren't targeting anyway).

var keys = [];  function keyisdown(keycode) {   return (keys.indexof(keycode) > -1); }  document.addeventlistener("keydown", function(e) {   // remember key being pressed   keys.push(e.keycode);    // check if enter , space both being pressed   if (keyisdown(13) && keyisdown(32)) {     togglefullscreen();   } }, false);  document.addeventlistener("keyup", function(e) {   // remember key no longer being pressed   var keyindex = keys.indexof(e.keycode);   if (keyindex > -1) keys.splice(keyindex, 1); }, false);

credit parjun basic idea; worked out without jquery.


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