js全屏判断

//判断是否全屏document.getElementById(id)
function IsFull() {
var fullscreenElement =
SSOcx.fullscreenEnabled
|| SSOcx.mozFullscreenElement
|| SSOcx.webkitFullscreenElement;
var fullscreenEnabled =
SSOcx.fullscreenEnabled
|| SSOcx.mozFullscreenEnabled
|| SSOcx.webkitFullscreenEnabled;
console.log(document.fullscreenElement);
console.log(document.fullscreenEnabled);
if (fullscreenElement == null)
{
return false;
} else {
return true;
}
}
/**
 * [isFullscreen 判断浏览器是否全屏]
 * @return [全屏则返回当前调用全屏的元素,不全屏返回false]
 */
function isFullscreen(){
console.log(document.fullscreenElement);
console.log(document.msFullscreenElement);
console.log(document.mozFullScreenElement);
console.log(document.webkitFullscreenElement);
return document.fullscreenElement    ||
   document.msFullscreenElement  ||
   document.mozFullScreenElement ||
   document.webkitFullscreenElement || false;
}