H5新属性---fullScreen是否全屏

该方法设置进入全屏和退出全屏:

HTML代码

        <button>全屏</button>
        <button>退出全屏</button>

JS代码

var btn = document.querySelector("button");
        btn.onclick = function () {
            //console.log(document.body.webkitRequestFullScreen);
            document.body.webkitRequestFullScreen();
        }
        document.querySelectorAll("button")[1].onclick = function () {
            //此处没有body
            document.webkitCancelFullScreen();
        }