Oliver Eyton-Williams ee1e8abd87

feat(curriculum): restore seed + solution to Chinese (#40683 )

* feat(tools): add seed/solution restore script

* chore(curriculum): remove empty sections' markers

* chore(curriculum): add seed + solution to Chinese

* chore: remove old formatter

* fix: update getChallenges

parse translated challenges separately, without reference to the source

* chore(curriculum): add dashedName to English

* chore(curriculum): add dashedName to Chinese

* refactor: remove unused challenge property 'name'

* fix: relax dashedName requirement

* fix: stray tag

Remove stray `pre` tag from challenge file.

Signed-off-by: nhcarrigan <nhcarrigan@gmail.com>

Co-authored-by: nhcarrigan <nhcarrigan@gmail.com>

2021-01-12 19:31:00 -07:00

3.1 KiB

Raw Blame History

id, title, challengeType, videoUrl, forumTopicId, dashedName

id	title	challengeType	videoUrl	forumTopicId	dashedName
587d78a8367417b2b2512ae6	以可变速率来给多个元素添加动画	0	https://scrimba.com/c/cnpWZc9	301042	animate-multiple-elements-at-variable-rates

--description--

在前面的关卡里，我们通过修改 @keyframes 改变了两个相似动画元素的频率。你也可以通过改变多个元素的 animation-duration 来达到同样的效果。

在编辑器代码运行的动画里，天空中有三个以同样频率不停闪烁的星星。你可以设置每一个星星的 animation-duration 属性为不同的值来使其具有不同的闪烁频率。

--instructions--

依次设置 class 为 star-1、star-2、star-3 的元素的 animation-duration 为 1s、0.9s、1.1s。

--hints--

class 为 star-1 的 animation-duration 属性值应该 1s。

assert($('.star-1').css('animation-duration') == '1s');

class 为 star-2 的 animation-duration 属性值应该 0.9s。

assert($('.star-2').css('animation-duration') == '0.9s');

class 为 star-3 的 animation-duration 属性值应该 1.1s。

assert($('.star-3').css('animation-duration') == '1.1s');

--seed--

--seed-contents--

<style>
  .stars {
    background-color: white;
    height: 30px;
    width: 30px;
    border-radius: 50%;
    animation-iteration-count: infinite;
  }

  .star-1 {
    margin-top: 15%;
    margin-left: 60%;
    animation-duration: 1s;
    animation-name: twinkle;
  }

  .star-2 {
    margin-top: 25%;
    margin-left: 25%;
    animation-duration: 1s;
    animation-name: twinkle;
  }

  .star-3 {
    margin-top: 10%;
    margin-left: 50%;
    animation-duration: 1s;
    animation-name: twinkle;
  }

  @keyframes twinkle {
    20% {
      transform: scale(0.5);
      opacity: 0.5;
    }
  }

  #back {
    position: fixed;
    padding: 0;
    margin: 0;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(black, #000099, #66c2ff, #ffcccc, #ffeee6);
  }
</style>

<div id="back"></div>
<div class="star-1 stars"></div>
<div class="star-2 stars"></div>
<div class="star-3 stars"></div>

--solutions--

<style>
  .stars {
    background-color: white;
    height: 30px;
    width: 30px;
    border-radius: 50%;
    animation-iteration-count: infinite;
  }

  .star-1 {
    margin-top: 15%;
    margin-left: 60%;
    animation-duration: 1s;
    animation-name: twinkle;
  }

  .star-2 {
    margin-top: 25%;
    margin-left: 25%;
    animation-duration: 0.9s;
    animation-name: twinkle;
  }

  .star-3 {
    margin-top: 10%;
    margin-left: 50%;
    animation-duration: 1.1s;
    animation-name: twinkle;
  }

  @keyframes twinkle {
    20% {
      transform: scale(0.5);
      opacity: 0.5;
    }
  }

  #back {
    position: fixed;
    padding: 0;
    margin: 0;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(black, #000099, #66c2ff, #ffcccc, #ffeee6);
  }
</style>
<div id="back"></div>
<div class="star-1 stars"></div>
<div class="star-2 stars"></div>
<div class="star-3 stars"></div>

3.1 KiB Raw Blame History