js 全屏监听esc

浏览器全屏后,用keydown、keyup监听esc要按两次才能监听得到

解决方案：

window.onresize = function(){
    if(!checkFull()){
      / /要执行的动作
    }
}

function checkFull(){
     var isFull = document.fullscreenEnabled || window.fullScreen || document.webkitIsFullScreen        ||document.msFullscreenEnabled;
    if(isFull === undefined) isFull = false;
   return isFull;
}