<style>
  #temp-video-cover {
    display: none;
    position: fixed;
    top: 0;
    bottom: 0;
    right: 0;
    left: 0;
    z-index: 11;
    background-color: rgba(0, 0, 0, 0.3);
    transition: .15s;
    opacity: 0;
    font-family: "微软雅黑", "PingFangSC", "Helvetica neue", "Hiragino sans gb", "Arial", "Microsoft YaHei UI", "Microsoft YaHei", "SimSun", "sans-serif";
    user-select: none;
    -ms-user-select: none;
  }


  #temp-video-container {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 1;
  }

  #temp-video-title {
    position: absolute;
    opacity: 0;
    right: 10px;
    top: 0px;
    transition: .15s;
  }

  #temp-video-container:hover #temp-video-title {
    display: inline;
    opacity: 1;
    top: 10px;
  }

  .FUI-dialog-header {
    position: relative;
    display: flex;
    align-items: center;
    padding: 0.5rem 0.8rem 0.5rem 1rem;
    background-color: rgb(0, 135, 205);
    border-color: rgb(0, 135, 205);
  }

  .FUI-dialog-header-title {
    font-size: 1rem;
    word-break: keep-all;
    text-overflow: ellipsis;
    overflow: hidden;
    white-space: nowrap;
    flex-grow: 1;
    color: white;
  }

  .FUI-dialog-header-close {
    width: 1.25rem;
    height: 1.25rem;
    font-size: 0.8rem;
    line-height: 1.25rem;
    border-radius: 0.9rem;
    color: #0088CE;
    text-align: center;
    transition: background-color 0.5s;
    cursor: pointer;
    background-color: #2FB8FF;
  }

  .FUI-dialog-header-close:hover {
    cursor: pointer;
    background-color: #6ACCFF;
  }

  .FUI-dialog-content {
    position: relative;
    flex-grow: 1;
    background-color: rgb(0, 135, 205);
    font-size: 0;
  }

  .FUI-dialog-footer {
    position: relative;
    height: 3rem;
    min-height: 3rem;
    display: flex;
    flex-direction: row-reverse;
    align-items: center;
    padding: 0.5rem;
    background-color: #F0F0F0;
  }

  .FUI-button-svg {
    display: inline-block;
  }

  #speed-box {
    background-color: #070707;
    border-color: #070707;
    color: #8B8B8B;
    display: flex;
    justify-content: flex-end;
    height: 2rem;
    align-items: center;
    font-weight: 200;
  }

  .speed-box-header {
    font-size: 0.9rem;
    cursor: default;
  }

  .speed-box-content {
    display: flex;
    font-size: 0.7rem;
  }

  .speed-box-content>div {
    width: 2.7rem;
    height: 1.2rem;
    background-color: #373737;
    margin: 0 0.5rem;
    text-align: center;
    line-height: 1.2rem;
    border-radius: 0.6rem;
    cursor: pointer;
  }

  .speed-box-content>div:hover {
    background-color: #555555;
    color: #FFFFFF;
  }

  .speed-box-content .speed-box-selected {
    background-color: #767676;
    color: #FFFFFF;
  }

  .speed-box-content .speed-box-selected:hover {
    background-color: #767676;
  }
</style>
<div style="text-align:right;">
  <a title="观看本节视频" href="javascript:showVideo();" style="text-decoration:none;">
    <img src="https://help.grapecity.com.cn/download/attachments/46173032/VideoPortal.png?api=v2" />
  </a>
</div>

<div id="temp-video-cover">
  <div id="temp-video-container">
    <div class="FUI-dialog-header">
      <span class="FUI-dialog-header-title">活字格视频</span>
      <div class="FUI-dialog-header-close" id="FUI-dialog-close" title="" onclick="closeVideo()">
        <span class="FUI-button-svg"></span><span class="FUI-button-text">&#10005;</span></div>
    </div>

    <div class="FUI-dialog-content">
      <div style="overflow:hidden;">
        <video id="temp-video" src="http://video1.grapecity.com.cn/HuoZiGe/Tutorials/v5.0/教学视频/命令-条件-条件表达式.mp4"
          height="450" controls="controls" onplaying="startplay()">您的浏览器不支持播放此视频。</video>
      </div>
    </div>
    <div id="speed-box">
      <div class="speed-box-header">
        <div>倍速：</div>
      </div>
      <div class="speed-box-content">
        <div>0.5X</div>
        <div class="speed-box-selected">1.0X</div>
        <div>1.25X</div>
        <div>1.5X</div>
        <div>2.0X</div>
      </div>
    </div>
  </div>
</div>

<script>
  var videoContainer = document.getElementById("temp-video-container");
  var videoCover = document.getElementById("temp-video-cover");
  var video = document.getElementById("temp-video");

  function showVideo() {
    videoCover.style.display = "block";
    setTimeout(function () {
      videoCover.style.opacity = 1;
      video.play();
    }, 200);
  }

  function closeVideo() {
    videoCover.style.opacity = 0;
    setTimeout(function () {
      videoCover.style.display = "none";
      video.pause();
    }, 150);
    return false;
  }

  function setPlaySpeed(item) {
    video.playbackRate = parseFloat(item.textContent);
    document.getElementsByClassName("speed-box-selected")[0].classList.remove("speed-box-selected");
    item.classList.add("speed-box-selected");
  }

  var isplayed = 1;
  var startplay = function () {
    if (isplayed) {
      ga('send', 'event', 'Play Video', '活字格');
      isplayed = 0;
    }
    return false;
  }

  videoCover.onclick = function (e) {
    if (e.target.nodeName === "A") {
      closeVideo();
    }
  }

  document.querySelectorAll("#speed-box .speed-box-content>div").forEach((item) => {
    item.addEventListener('click', () => { setPlaySpeed(item) });
  });

</script>