vue组件实现进度条效果

<template>
 <div class="vue-progress-bar default-theme">
  <div class="vue-progress-bar__tip">
   <span class="vue-progress-bar__tiplabel">{{label}}</span>
   <span class="vue-progress-bar__tiptext">{{text}}</span>
  </div>
  <div class="vue-progress-bar__outer">
   <div class="vue-progress-bar__inner" :style="barStyle"></div>
  </div>
 </div>
</template>

<script>
 export default {
  props:{
   label:String,
   text:String,
   height:{
    type: Number,
    default: 0,
    required: true,
    validator: val => val >= 0
   },
   color: {
    type: String,
    default: ''
   },
   percentage:{
    type: Number,
    default: 0,
    required: true,
    validator: val => val >= 0 && val <= 100
   }
  },
  computed:{
   barStyle() {
    const style = {};
    style.width = this.percentage + '%';
    style.height = this.height + 'px';
    style.backgroundColor = this.color;
    return style;
   }
  }
 }
</script>

<style lang="scss" scoped>
 .vue-progress-bar.default-theme{
  .vue-progress-bar__outer {
   background: #eee;
  }
 }

 .vue-progress-bar {
  .vue-progress-bar__tiptext {
   float: right;
  }
 }
</style>