浏览器全屏显示

全屏

var docElm = document.documentElement;
//W3C  
if (docElm.requestFullscreen) {
    docElm.requestFullscreen();  
}
//FireFox
else if (docElm.mozRequestFullScreen) {
    docElm.mozRequestFullScreen();  
}//Chrome等
else if (docElm.webkitRequestFullScreen) {
    docElm.webkitRequestFullScreen();  
}
//IE11
else if (elem.msRequestFullscreen) {
  elem.msRequestFullscreen();
}

退出全屏

if (document.exitFullscreen) {  
    document.exitFullscreen();  
}  
else if (document.mozCancelFullScreen) {  
    document.mozCancelFullScreen();  
}  
else if (document.webkitCancelFullScreen) {  
    document.webkitCancelFullScreen();  
}
else if (document.msExitFullscreen) {
      document.msExitFullscreen();
}