刪除document.onfullscreenchange全屏API

Question

我得到一個頁面，檢查用戶是否離開全屏。我想刪除/銷燬這個事件的觀察者，但無法找到我怎麼能在描述 API Description 這裏做，這是我的代碼：

//create black background and disable scrolling 
    $rootScope.fullScreen = !$rootScope.fullScreen; 

    //make div fullScreen (Browser Native) 
    if($rootScope.fullScreen == true) { 
    var videoWindow = document.getElementById("full-screen"); 
    if (videoWindow.requestFullscreen) { 
     videoWindow.requestFullscreen(); 
    } 

     //check if user has closed fullscreen 
     document.onwebkitfullscreenchange = function (event) { 
     if(!document.webkitFullscreenElement) { 
      $rootScope.fullScreen = false; 
      //REMOVE THE EVENTHANDLER - STOP WATCHING! 
      ????????? 

     } 
     }; 

Answer 1

你對去除事件用意何在？

document.onwebkitfullscreenchange = null; 

應該工作。