全屏展示元素和监听

//全屏幕
let element = document.getElementById("screen");
if (element.requestFullscreen) {
    element.requestFullscreen();
} else if (element.mozRequestFullScreen) {
    element.mozRequestFullScreen();
} else if (element.webkitRequestFullscreen) {
    element.webkitRequestFullscreen();
} else if (element.msRequestFullscreen) {
    element.msRequestFullscreen();
}

//监听

let element = document.getElementById("screen");


element.addEventListener("fullscreenchange", function(e) {
    self.fullisscreen= document.fullscreenElement || document.msFullscreenElement || document.mozFullScreenElement || document.webkitFullscreenElement || false
    //
});
element.addEventListener("mozfullscreenchange", function(e) {
    self.fullisscreen= document.fullscreenElement || document.msFullscreenElement || document.mozFullScreenElement || document.webkitFullscreenElement || false
    //
});
element.addEventListener("webkitfullscreenchange", function(e) {
    self.fullisscreen= document.fullscreenElement || document.msFullscreenElement || document.mozFullScreenElement || document.webkitFullscreenElement || false
    //
});
element.addEventListener("msfullscreenchange", function(e) {
    self.fullisscreen= document.fullscreenElement || document.msFullscreenElement || document.mozFullScreenElement || document.webkitFullscreenElement || false
    //
});