浏览器全屏与退出全屏的方法

代码如下：

// 全屏
fullScreen() {
  this.$store.state.app.fullscreen = true
  var el = document.documentElement
  var rfs = el.requestFullScreen || el.webkitRequestFullScreen || el.mozRequestFullScreen || el.msRequestFullScreen
  if (typeof rfs !== 'undefined' && rfs) {
    rfs.call(el)
  } else if (typeof window.ActiveXObject !== 'undefined') {
    // for IE，这里其实就是模拟了按下键盘的F11，使浏览器全屏
    // eslint-disable-next-line
    var wscript = new ActiveXObject('WScript.Shell')
    if (wscript != null) {
      wscript.SendKeys('{F11}')
    }
  }
}
//退出全屏
exitFull() {
  this.$store.state.app.fullscreen = false
  // 判断各种浏览器，找到正确的方法
  var exitMethod = document.exitFullscreen || document.mozCancelFullScreen || document.webkitExitFullscreen || document.webkitExitFullscreen
  if (exitMethod) {
    exitMethod.call(document)
  } else if (typeof window.ActiveXObject !== 'undefined') { // for Internet Explorer
  // eslint-disable-next-line
    var wscript = new ActiveXObject('WScript.Shell')
    if (wscript !== null) {
      wscript.SendKeys('{F11}')
    }
  }
}