微软徽标动画 v2答案

【问题标题】：Microsoft Logo Animation v2微软徽标动画 v2
【发布时间】：2015-08-18 16:00:21
【问题描述】：

我更新了我的animation 的 Microsoft 徽标。它可以在CodePen 上找到。总的来说，除了一件事，我现在对它还是很满意的。

我似乎无法弄清楚如何停止动画以使徽标看起来正确。我尝试将延迟设置为 6000 毫秒 = 6 秒 = 动画长度，但它看起来很遥远。现在它设置为5900ms。这方面有什么建议吗？

我想知道的另一件事是，您如何让 YouTube 视频在一定时间后播放，比如文本何时出现？谢谢！

var playState = '-webkit-animation-play-state';

$(".boxes").css(playState, "running");
setTimeout(function() {
  $(".boxes").css(playState, "paused");
}, 5900);

body {
  background: hsl(30, 20%, 20%);
  color: #fff;
  font-family: 'Open Sans', sans-serif;
}

.boxes {
  -webkit-animation: logo 6s 1 forwards;
  animation: logo 6s 1 forwards;
  position: absolute;
}

.box {
  -webkit-animation: scaling 1.5s cubic-bezier(.1,.95,.7,.8) 4;
  animation: scaling 1.5s cubic-bezier(.1,.95,.7,.8) 4;
  height: 50px;
  width: 50px;
}

.brand {
  -webkit-animation: fadein 2s ease 4.5s forwards;
  animation: fadein 2s ease 4.5s forwards;
  display: inline;
  font-size: 36px;
  margin: 24px 0 0 0;
  opacity: 0;
  position: relative;
  top: -36px;
  text-align: center;
  z-index: 0;
}

.flex {
  display: -webkit-box;
  display: -ms-flexbox;
  display: -webkit-flex;
  display: flex;
  min-height: 100vh;
  -webkit-flex-direction: column;
  flex-direction: column;
  justify-content: center;
}

.intro {
  text-align: center;
}

.logo {
  -webkit-animation: moveLeft .5s linear 4.5s forwards;
  animation: moveLeft .5s linear 4.5s forwards;
  display: inline-block;
  height: 100px;
  left: 100px;
  margin: 0 auto;
  position: relative;
  width: 100px;
  z-index: 1;
}

.player {
  display:none;
}

#green {background: #7cbb00;}
#yellow {background: #ffbb00;}
#blue {background: #00a1f1;}
#red {background: #f65314;}

#animateGreen {animation-delay: 4.5s;}
#animateYellow {animation-delay: 3s;}
#animateBlue {animation-delay: 1.5s;}
#animateRed {animation-delay: 0s;}

@keyframes fadein {
  from {opacity: 0;}
  to {opacity: 1;}
}

@keyframes logo {
  0% {left: 0px; top: 0px; transform: rotate(0deg)}
  25% {left: 50px; top: 0px; transform: rotate(-180deg)}
  50% {left: 50px; top: 50px; transform: rotate(-360deg)}
  75% {left: 0px; top: 50px; transform: rotate(-540deg)}
  100% {left: 0px; top: 0px; transform: rotate(-720deg)}
}

@keyframes moveLeft {
  from {padding-right: 0; left: 100px;}
  to {padding-right: 50px; left: 0;}
}

@keyframes scaling {
  0%, 100% {transform: scale(1)}
  50% {transform: scale(.5)}
}

<head><script src="//cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script></head>

<div class="flex">
  <div class="intro">
    <div class="logo">
      <div class="boxes" id="animateGreen">
        <div class="box" id="green">
        </div>
      </div>
      <div class="boxes" id="animateYellow">
        <div class="box" id="yellow">
        </div>
      </div>
      <div class="boxes" id="animateBlue">
        <div class="box" id="blue">
        </div>
      </div>
      <div class="boxes" id="animateRed">
        <div class="box" id="red">
        </div>
      </div>
    </div>
    <div class="brand">
      Microsoft
    </div>
  </div>
</div>

<iframe width="560" height="315" src="https://www.youtube.com/embed/I3Ak5VgyEoc?autoplay=1" class="player"></iframe>

【问题讨论】：

标签： javascript jquery html css animation

【解决方案1】：

与其使用 jQuery/JavaScript 来停止动画，更好的方法是为每个以它们结尾的框指定不同的动画。

Example CodePen

至于在文本出现时播放 YouTube 视频，如果您参考 YouTube API Docs 在 jQuery 中会是这样的：

setTimeout(function(){
    //play the youtube video (#playerId) is the id of your youtube video element
    $('#playerId').get(0).playVideo();
} , 4500); //4500 is the delay in ms

【讨论】：

非常感谢伙计！我想我是因为不写额外的动画而试图变得太高效。谢谢