video视频点击全屏播放设置

// 反射調用
var invokeFieldOrMethod = function(element, method){
  var usablePrefixMethod;
  ["webkit", "moz", "ms", "o", ""].forEach(function(prefix) {
    if (usablePrefixMethod) return;
    if (prefix === "") {
      // 无前缀,方法首字母小写
      method = method.slice(0,1).toLowerCase() + method.slice(1);
    }
    var typePrefixMethod = typeof element[prefix + method];
    if (typePrefixMethod + "" !== "undefined") {
      if (typePrefixMethod === "function") {
        usablePrefixMethod = element[prefix + method]();
      } else {
        usablePrefixMethod = element[prefix + method];
      }
    }
  });
  return usablePrefixMethod;
};
//進入全屏
function launchFullscreen(element){
  //此方法不可以在異步任務中執行,否則火狐無法全屏
  if(element.requestFullscreen) {
    element.requestFullscreen();
  } else if(element.mozRequestFullScreen) {
    element.mozRequestFullScreen();
  } else if(element.msRequestFullscreen){
    element.msRequestFullscreen();
  } else if(element.oRequestFullscreen){
    element.oRequestFullscreen();
  } else if(element.webkitRequestFullscreen){
    element.webkitRequestFullScreen();
  }else{
    var docHtml = document.documentElement;
    var docBody = document.body;
    var videobox = document.getElementById('video');
    var cssText = 'width:100%;height:100%;overflow:hidden;';
    docHtml.style.cssText = cssText;
    docBody.style.cssText = cssText;
    videobox.style.cssText = cssText+';'+'margin:0px;padding:0px;';
    document.IsFullScreen = true;
  }
}
//退出全屏
function exitFullscreen(){
  if (document.exitFullscreen) {
    document.exitFullscreen();
  } else if (document.msExitFullscreen) {
    document.msExitFullscreen();
  } else if (document.mozCancelFullScreen) {
    document.mozCancelFullScreen();
  } else if(document.oRequestFullscreen){
    document.oCancelFullScreen();
  }else if (document.webkitExitFullscreen){
    document.webkitExitFullscreen();
  }else{
    var docHtml = document.documentElement;
    var docBody = document.body;
    var videobox = document.getElementById('video');
    docHtml.style.cssText = "";
    docBody.style.cssText = "";
    videobox.style.cssText = "";
    document.IsFullScreen = false;
  }
}
document.getElementById('video_play').addEventListener('click',function(){
  launchFullscreen(document.getElementById('video'));
  window.setTimeout(function exit(){
    //檢查瀏覽器是否處於全屏
    if(invokeFieldOrMethod(document,'FullScreen') || invokeFieldOrMethod(document,'IsFullScreen') || document.IsFullScreen){
      exitFullscreen();
    }
  },5*1000);
},false);

转载于:https://www.cnblogs.com/Jason-qiang/p/8629076.html

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