一个好看的按钮加载动画分享

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来源：http://ww.jq22.com

HTML代码

<button class="button">
    <span class="submit">上传span>
    <span class="loading"><i class="fa fa-refresh">i>span>
    <span class="check"><i class="fa fa-check">i>span>
button>

CSS代码

<style type="text/css">
    html {
      box-sizing: border-box;
      font-family: "微软雅黑";
    }

    *, *::after, *::before {
      box-sizing: inherit;
    }

    *, *:before, *:after {
      box-sizing: border-box;
      outline: none;
    }

    html {
      font-family: 'Source Sans Pro', sans-serif;
      font-size: 16px;
      font-smooth: auto;
      font-weight: 300;
      line-height: 1.5;
      color: #444;
    }

    body {
      position: relative;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      width: 100%;
      height: 100vh;
    }

    .hide {
      display: none;
    }

    .button {
      position: relative;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      width: 12.5rem;
      magrin: 0;
      padding: 1.5rem 3.125rem;
      background-color: #3498db;
      border: none;
      border-radius: 0.3125rem;
      box-shadow: 0 12px 24px 0 rgba(0, 0, 0, 0.2);
      color: white;
      font-weight: 300;
      text-transform: uppercase;
      overflow: hidden;
    }
    .button:before {
      position: absolute;
      content: '';
      bottom: 0;
      left: 0;
      width: 0%;
      height: 100%;
      background-color: #54d98c;
    }
    .button span {
      position: absolute;
      line-height: 0;
    }
    .button span i {
      transform-origin: center center;
    }
    .button span:nth-of-type(1) {
      top: 50%;
      transform: translateY(-50%);
    }
    .button span:nth-of-type(2) {
      top: 100%;
      transform: translateY(0%);
      font-size: 24px;
    }
    .button span:nth-of-type(3) {
      display: none;
    }

    .active {
      background-color: #2ecc71;
    }
    .active:before {
      width: 100%;
      transition: width 3s linear;
    }
    .active span:nth-of-type(1) {
      top: -100%;
      transform: translateY(-50%);
    }
    .active span:nth-of-type(2) {
      top: 50%;
      transform: translateY(-50%);
    }
    .active span:nth-of-type(2) i {
      animation: loading 500ms linear infinite;
    }
    .active span:nth-of-type(3) {
      display: none;
    }

    .finished {
      background-color: #54d98c;
    }
    .finished .submit {
      display: none;
    }
    .finished .loading {
      display: none;
    }
    .finished .check {
      display: block !important;
      font-size: 24px;
      animation: scale 0.5s linear;
    }
    .finished .check i {
      transform-origin: center center;
    }

    @keyframes loading {
      100% {
        transform: rotate(360deg);
      }
    }
    @keyframes scale {
      0% {
        transform: scale(10);
      }
      50% {
        transform: scale(0.2);
      }
      70% {
        transform: scale(1.2);
      }
      90% {
        transform: scale(0.7);
      }
      100% {
        transform: scale(1);
      }
    }
style>

JS代码

//引入图标地址
<script src="https://use.fontawesome.com/2473308824.js">script>

<script type="text/javascript">
    const button = document.querySelector('.button');
    const submit = document.querySelector('.submit');

    function toggleClass() {
        this.classList.toggle('active');
    }

    function addClass() {
        this.classList.add('finished');
    }

    button.addEventListener('click', toggleClass);
    button.addEventListener('transitionend', toggleClass);
    button.addEventListener('transitionend', addClass);
script>