@click="isFullScreen?exitScreen():fullScreen()"

    fullScreen() {
                var el = document.documentElement;
                var rfs =
                    el.requestFullScreen ||
                    el.webkitRequestFullScreen ||
                    el.mozRequestFullScreen ||
                    el.msRequestFullscreen;
                if (typeof rfs != "undefined" && rfs && this.isFullScreen === false) {
                    rfs.call(el);
                    this.isFullScreen = true;
                }
                return;
            },
            exitScreen() {
                var cfs =
                    document.exitFullscreen ||
                    document.mozCancelFullScreen ||
                    document.webkitCancelFullScreen ||
                    document.msExitFullscreen;
                if (typeof cfs != "undefined" && cfs && this.isFullScreen === true) {
                    cfs.call(document);
                    this.isFullScreen = false;
                }
            }
···