vue项目加载前空白的动画过渡效果

参考：https://github.com/mgbq/nx-admin

 

复制以下html内容到项目的index.html中即可：

 <style> html, body, #app { height: 100%; margin: 0px; padding: 0px;
    } .chromeframe { margin: 0.2em 0; background: #ccc; color: #000; padding: 0.2em 0;
    } #loader-wrapper { position: fixed; top: 0; left: 0; width: 100%; height: 100%; z-index: 999999;
    } #loader { display: block; position: relative; left: 50%; top: 50%; width: 150px; height: 150px; margin: -75px 0 0 -75px; border-radius: 50%; border: 3px solid transparent;
      /* COLOR 1 */ border-top-color: #FFF; -webkit-animation: spin 2s linear infinite;
      /* Chrome, Opera 15+, Safari 5+ */ -ms-animation: spin 2s linear infinite;
      /* Chrome, Opera 15+, Safari 5+ */ -moz-animation: spin 2s linear infinite;
      /* Chrome, Opera 15+, Safari 5+ */ -o-animation: spin 2s linear infinite;
      /* Chrome, Opera 15+, Safari 5+ */ animation: spin 2s linear infinite;
      /* Chrome, Firefox 16+, IE 10+, Opera */ z-index: 1001;
    } #loader:before { content: ""; position: absolute; top: 5px; left: 5px; right: 5px; bottom: 5px; border-radius: 50%; border: 3px solid transparent;
      /* COLOR 2 */ border-top-color: #FFF; -webkit-animation: spin 3s linear infinite;
      /* Chrome, Opera 15+, Safari 5+ */ -moz-animation: spin 3s linear infinite;
      /* Chrome, Opera 15+, Safari 5+ */ -o-animation: spin 3s linear infinite;
      /* Chrome, Opera 15+, Safari 5+ */ -ms-animation: spin 3s linear infinite;
      /* Chrome, Opera 15+, Safari 5+ */ animation: spin 3s linear infinite;
      /* Chrome, Firefox 16+, IE 10+, Opera */
    } #loader:after { content: ""; position: absolute; top: 15px; left: 15px; right: 15px; bottom: 15px; border-radius: 50%; border: 3px solid transparent; border-top-color: #FFF;
      /* COLOR 3 */ -moz-animation: spin 1.5s linear infinite;
      /* Chrome, Opera 15+, Safari 5+ */ -o-animation: spin 1.5s linear infinite;
      /* Chrome, Opera 15+, Safari 5+ */ -ms-animation: spin 1.5s linear infinite;
      /* Chrome, Opera 15+, Safari 5+ */ -webkit-animation: spin 1.5s linear infinite;
      /* Chrome, Opera 15+, Safari 5+ */ animation: spin 1.5s linear infinite;
      /* Chrome, Firefox 16+, IE 10+, Opera */
    } @-webkit-keyframes spin { 0% { -webkit-transform: rotate(0deg);
        /* Chrome, Opera 15+, Safari 3.1+ */ -ms-transform: rotate(0deg);
        /* IE 9 */ transform: rotate(0deg);
        /* Firefox 16+, IE 10+, Opera */
      } 100% { -webkit-transform: rotate(360deg);
        /* Chrome, Opera 15+, Safari 3.1+ */ -ms-transform: rotate(360deg);
        /* IE 9 */ transform: rotate(360deg);
        /* Firefox 16+, IE 10+, Opera */
      } } @keyframes spin { 0% { -webkit-transform: rotate(0deg);
        /* Chrome, Opera 15+, Safari 3.1+ */ -ms-transform: rotate(0deg);
        /* IE 9 */ transform: rotate(0deg);
        /* Firefox 16+, IE 10+, Opera */
      } 100% { -webkit-transform: rotate(360deg);
        /* Chrome, Opera 15+, Safari 3.1+ */ -ms-transform: rotate(360deg);
        /* IE 9 */ transform: rotate(360deg);
        /* Firefox 16+, IE 10+, Opera */
      } } #loader-wrapper .loader-section { position: fixed; top: 0; width: 51%; height: 100%; background: #7171C6;
      /* Old browsers */ z-index: 1000; -webkit-transform: translateX(0);
      /* Chrome, Opera 15+, Safari 3.1+ */ -ms-transform: translateX(0);
      /* IE 9 */ transform: translateX(0);
      /* Firefox 16+, IE 10+, Opera */
    } #loader-wrapper .loader-section.section-left { left: 0;
    } #loader-wrapper .loader-section.section-right { right: 0;
    }
    /* Loaded */ .loaded #loader-wrapper .loader-section.section-left { -webkit-transform: translateX(-100%);
      /* Chrome, Opera 15+, Safari 3.1+ */ -ms-transform: translateX(-100%);
      /* IE 9 */ transform: translateX(-100%);
      /* Firefox 16+, IE 10+, Opera */ -webkit-transition: all 0.7s 0.3s cubic-bezier(0.645, 0.045, 0.355, 1.000); transition: all 0.7s 0.3s cubic-bezier(0.645, 0.045, 0.355, 1.000);
    } .loaded #loader-wrapper .loader-section.section-right { -webkit-transform: translateX(100%);
      /* Chrome, Opera 15+, Safari 3.1+ */ -ms-transform: translateX(100%);
      /* IE 9 */ transform: translateX(100%);
      /* Firefox 16+, IE 10+, Opera */ -webkit-transition: all 0.7s 0.3s cubic-bezier(0.645, 0.045, 0.355, 1.000); transition: all 0.7s 0.3s cubic-bezier(0.645, 0.045, 0.355, 1.000);
    } .loaded #loader { opacity: 0; -webkit-transition: all 0.3s ease-out; transition: all 0.3s ease-out;
    } .loaded #loader-wrapper { visibility: hidden; -webkit-transform: translateY(-100%);
      /* Chrome, Opera 15+, Safari 3.1+ */ -ms-transform: translateY(-100%);
      /* IE 9 */ transform: translateY(-100%);
      /* Firefox 16+, IE 10+, Opera */ -webkit-transition: all 0.3s 1s ease-out; transition: all 0.3s 1s ease-out;
    }
    /* JavaScript Turned Off */ .no-js #loader-wrapper { display: none;
    } .no-js h1 { color: #222222;
    } #loader-wrapper .load_title { font-family: 'Open Sans'; color: #FFF; font-size: 19px; width: 100%; text-align: center; z-index: 9999999999999; position: absolute; top: 60%; opacity: 1; line-height: 30px;
    } #loader-wrapper .load_title span { font-weight: normal; font-style: italic; font-size: 13px; color: #FFF; opacity: 0.5;
    } </style>

  <div id="app">
    <div id="loader-wrapper">
      <div id="loader"></div>
      <div class="loader-section section-left"></div>
      <div class="loader-section section-right"></div>
      <div class="load_title">正在加载 nx-admin,请耐心等待 <br>
        <span>V1.3</span>
      </div>
    </div>
  </div>