js最大化窗口

  /* 最大化窗口 */
    $(".screen-full").on("click", function (e) {
        e.preventDefault();
        if (!$(this).hasClass("full-on")) {
            var docElm = document.documentElement;
            var full = docElm.requestFullScreen || docElm.webkitRequestFullScreen ||
                docElm.mozRequestFullScreen || docElm.msRequestFullscreen;
            "undefined" !== typeof full && full && full.call(docElm);
        } else {
            document.exitFullscreen ? document.exitFullscreen()
                : document.mozCancelFullScreen ? document.mozCancelFullScreen()
                : document.webkitCancelFullScreen ? document.webkitCancelFullScreen()
                    : document.msExitFullscreen && document.msExitFullscreen()
        }
        $(this).toggleClass("full-on");
    });