javascript – 如何让这个HTML5全屏功能在Firefox中运行?

我想要一个使用
HTML5全屏API触发全屏模式的按钮.我在网络上关注了一些示例以获取下面的代码,但它仅适用于Safari / Chrome,因为它是特定于webkit的前缀.我想使用moz前缀(以及标准HTML5)也可以在Firefox中使用,但我不知道如何去做.有什么建议?

HTML:

<div id="viewer">
     <a href="#" class="fullscreen">Exit/enter fullscreen mode</a>
</div>

JS:

$('.fullscreen').on('click', function(){
     var elem = document.getElementById('viewer');
     if (document.webkitFullscreenElement) {
          document.webkitCancelFullScreen();
     } else {
          elem.webkitRequestFullScreen();
     };
});

最佳答案 你可以尝试这样的事情:

var cancelFullScreen = document.cancelFullScreen 
  || document.webkitCancelFullScreen
  || document.mozCancelFullScreen 
  || document.msCancelFullScreen;

var requestFullScreen = document.requestFullScreen 
  || document.webkitRequestFullScreen
  || document.mozRequestFullScreen 
  || document.msRequestFullScreen;

$('.fullscreen').on('click', function(){
  var elem = document.getElementById('viewer');
  var fullscreenElement = document.fullscreenElement 
    || document.webkitFullscreenElement
    || document.mozFullscreenElement 
    || document.msFullscreenElement;

  if (fullscreenElement) {
    cancelFullScreen.call(document);
  } else {
    requestFullScreen.call(document);
  };
});
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