vue 全局封装loading

这里提供两个不同样式的封装案例，具体如下：

案例一：动画实现

loading.vue

<template>
  <div v-if="show" class="lds-spinner">
    <div class="spinner">
      <div class="double-bounce1"></div>
      <div class="double-bounce2"></div>
    </div>
  </div>
</template>
<script>
export default {
  name: 'Loading',
  props: {
    show: Boolean
  },
  data() {
    return {
    }
  }
}
</script>
<style lang="scss" scoped>
.lds-spinner{
  position: fixed;
  top:0;
  left:0;
  width:100%;
  height:100%;
}
.spinner {
  width: 25px;
  height: 25px;
  position:absolute;
  top:50%;
  left:50%;
  transform: translate(-50%);
  .double-bounce1, .double-bounce2 {
    width: 25px;
    height: 25px;
    border-radius: 50%;
    background-color: #FF000F;
    opacity: 0.6;
    position: absolute;
    top: 0;
    left: 0;
    -webkit-animation: bounce 2.0s infinite ease-in-out;
    animation: bounce 2.0s infinite ease-in-out;
  }
  .double-bounce2 {
    -webkit-animation-delay: -1.0s;
    animation-delay: -1.0s;
  }
}
 
@-webkit-keyframes bounce {
  0%, 100% { -webkit-transform: scale(0.0) }
  50% { -webkit-transform: scale(1.0) }
}
 
@keyframes bounce {
  0%, 100% {
    transform: scale(0.0);
    -webkit-transform: scale(0.0);
  } 50% {
    transform: scale(1.0);
    -webkit-transform: scale(1.0);
  }
}
</style>

loading.js

import Vue from 'vue'
import loadingComponent from '@/components/loading.vue'

const LoadingConstructor = Vue.extend(loadingComponent)

const instance = new LoadingConstructor({
  el: document.createElement('div')
})

instance.show = false // 默认隐藏
const loading = {
  show() { // 显示方法
    instance.show = true
    document.body.appendChild(instance.$el)
  },
  hide() { // 隐藏方法
    instance.show = false
  }
}

export default {
  install() {
    if (!Vue.$loading) {
      Vue.$loading = loading
    }
    Vue.mixin({
      created() {
        this.$loading = Vue.$loading
      }
    })
  }
}

main.js

import loading from './utils/loading.js' // 引入loading
Vue.use(loading) // 全局使用loading

loading显示效果：

(此处按帧截图，效果不太明显，可复制代码直接看效果?)

案例二：图片+动画实现

loading.vue

<template>
  <div v-if="show" class="loading-container">
    <div class="loading-mask"></div>
    <div class="loading-content">
      <div class="loading-animate"></div>
      <div class="loading-text">{{ text }}</div>
    </div>
  </div>
</template>
<script>
export default {
  name: 'Loading',
  props: {
    show: Boolean
  },
  data() {
    return {
        text: '正在加载...'
    }
  }
}
</script>
<style lang="scss" scoped>
.loading-container{
  position: relative;
  text-align: center;
  .loading-mask{
    position: fixed;
    top:0;
    bottom:0;
    left:0;
    right:0;
    background-color:rgba(0,0,0,.7);
  }
  .loading-content{
    position: fixed;
    left: 50%;
    top: 45%;
    z-index: 300;
    transform: translate(-50%,-45%);
    text-align: center;
    color:#fff;
    .loading-animate{
      display: inline-block;
      width:35px;
      height:35px;
      margin: 25px 0 10px;
      vertical-align: middle;
      animation: cricleLoading 1s steps(12, end) infinite;
      background: transparent url("data:image/svg+xml;base64,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") no-repeat;
      background-size:100%;
    }
    .loading-text{
      font-size: 14px;
      color: #fff;
    }
  }
}
@-webkit-keyframes cricleLoading {
  0% {
    transform: rotate3d(0,0,1,0deg);
  }
  100% {
    transform: rotate3d(0,0,1,360deg);
  }
}
@keyframes cricleLoading {
  0% {
    transform: rotate3d(0,0,1,0deg);
  }
  100% {
    transform: rotate3d(0,0,1,360deg);
  }
}
</style>

loading.js

// 代码同案例一的loading.js代码一致

• 1

main.js

// 引入方式也同案例一中main.js代码一致

• 1

在其他组件中使用loading:

// 同案例一中使用方式相同

• 1

loading显示效果：