vue first screen optimization experience (initialization animation)

# Create a new css folder under the static folder, and then create a loading.css file under the css folder

.container {
  position: relative;
  text-align: center;
  width: 100px;
}

.item {
  display: inline-block;
  height: 15px;
  width: 15px;
  border-radius: 50%;
  background: #969aec;;
  animation: item 1s ease-in-out infinite;
}
.b {
  animation-delay: .2s;
}
.c {
  animation-delay: .4s;
}
@keyframes item {
  0% {
    transform: translateY(0);
    opacity: 1;
  }
  50% {
    transform: translateY(20px);
    opacity: 0;
  }
  100% {
    transform: translateY(0);
    opacity: 1;
  }
}


# Reference the loading.css file in the index.html page

<link rel="stylesheet" type="text/css" href="static/css/loading.css">


# Insert a div in the body of the index.html page

  1. <div>的 id = " loading "
  2. style:
  • style = “margin: 0 auto;” // div is centered horizontally
  • style = "font-size: 18px;" // font size 18px
  • style = "text-align: center;" // The text is centered horizontally
  1. <div id="loading"><div id="app">The purpose of putting it in front is to give priority to waiting for loading animation
<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width,initial-scale=1.0">
    <title>chenbz</title>
    <!--  引入加载动画  -->
    <link rel="stylesheet" type="text/css" href="static/css/loading.css">
  </head>
  <body>
    <div id="loading">
      <div style="padding: 300px 0;">
        <div class="container" style="margin: 0 auto;">
          <div class="item a"></div>
          <div class="item b"></div>
          <div class="item c"></div>
        </div>
        <p style="font-size: 18px; margin-top: 30px; text-align: center;">页面加载中,喝口水先,不急。</p>
      </div>
    </div>
    <div id="app"></div>
    <!-- built files will be auto injected -->
  </body>
</html>


# App.view

Add in App.vue

created() {
    let loading = document.getElementById("loading");
    if (loading !== null) {
      document.body.removeChild(loading);
    }
  }
  • Get the DOM with id = "loading", and if it can be obtained, remove it from the body.
  • Loading here means that the homepage has been initialized, so you can remove the waiting animation



App.vue complete code:

<template>
  <div id="app">
    <router-view/>
  </div>
</template>

<script>
export default {
  name: 'App',
  created() {
    let loading = document.getElementById("loading");
    if (loading !== null) {
      document.body.removeChild(loading);
    }
  }
}
</script>

<style>
</style>


The css animation is reproduced from: https://www.jianshu.com/p/9b2a71fa25e5 , there are other animation css codes

Related Reading:

30 CSS3 cool page pre-loading animation effects (recommended): http://www.ibloger.net/article/1558.html
Loaders.css Various pure CSS loading progress animation effects: http: //www.ibloger. net / article / 1568.html
load-awesome 53 pure CSS3 preloading page loading indicator animation special effects: http://www.ibloger.net/article/1800.html
CSS3-Preloaders 6 CSS3 preloading loading indicator animation Special effects: http://www.ibloger.net/article/1556.html
Button special effects are based on Loading of SVG and Segment.js: http://www.ibloger.net/article/1554.htmlOriginal
link: https: / /blog.csdn.net/xiaokui_wingfly/article/details/51502209

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Origin blog.csdn.net/weixin_42863549/article/details/104609051