js中开启全屏，以及退出全屏

平时写页面，因为做的是系统界面，客户对象是工作人员使用，所以经常遇到需要全屏功能的系统。

不墨迹，直接上代码

开启全屏：

var el = document.documentElement;
        var rfs = el.requestFullScreen || el.webkitRequestFullScreen ||
            el.mozRequestFullScreen || el.msRequestFullScreen;
        if (rfs) { //typeof rfs != "undefined" && rfs
            rfs.call(el);
        } else if (typeof window.ActiveXObject != "undefined") {
            //for IE，这里其实就是模拟了按下键盘的F11，使浏览器全屏
            var wscript = new ActiveXObject("WScript.Shell");
            if (wscript != null) {
                wscript.SendKeys("{F11}");
            }
        }

退出全屏

    var el = document;
        var cfs = el.cancelFullScreen || el.webkitCancelFullScreen ||
            el.mozCancelFullScreen || el.exitFullScreen;
        if (cfs) { //typeof cfs != "undefined" && cfs
            cfs.call(el);
        } else if (typeof window.ActiveXObject != "undefined") {
            //for IE，这里和fullScreen相同，模拟按下F11键退出全屏
            var wscript = new ActiveXObject("WScript.Shell");
            if (wscript != null) {
                wscript.SendKeys("{F11}");
            }
        }

赠送小方法

'20170710'.replace(/(\d{4})(\d{2})(\d{2})/g,'$1-$2-$3');  // 2017-07-10