浏览器操作事件

网页全屏

function FullScreen() {
  let elem = document.body
  elem.webkitRequestFullScreen
    ? elem.webkitRequestFullScreen()
    : elem.mozRequestFullScreen
    ? elem.mozRequestFullScreen()
    : elem.msRequestFullscreen
    ? elem.msRequestFullscreen()
    : elem.requestFullScreen
    ? elem.requestFullScreen()
    : throw new Error("不支持全屏")
}

网页退出全屏

function exitFullscreen() {
  let elem = parent.document
  elem.webkitCancelFullScreen
    ? elem.webkitCancelFullScreen()
    : elem.mozCancelFullScreen
    ? elem.mozCancelFullScreen()
    : elem.cancelFullScreen
    ? elem.cancelFullScreen()
    : elem.msExitFullscreen
    ? elem.msExitFullscreen()
    : elem.exitFullscreen
    ? elem.exitFullscreen()
    : throw new Error("退出全屏失败")
}

禁止右键、选择、复制

;['contextmenu', 'selectstart', 'copy'].forEach(function (ev) {
  document.addEventListener(ev, function (event) {
    return (event.returnValue = false)
  })
})