详解VUE 定义全局变量的几种实现方式

<script type="text/javascript">
const colorList = [
 '#F9F900',
 '#6FB7B7',
 '#9999CC',
 '#B766AD',
 '#B87070',
 '#FF8F59',
 '#FFAF60',
 '#FFDC35',
 '#FFFF37',
 '#B7FF4A',
 '#28FF28',
 '#1AFD9C',
 '#00FFFF',
 '#2894FF',
 '#6A6AFF',
 '#BE77FF',
 '#FF77FF',
 '#FF79BC',
 '#FF2D2D',
 '#ADADAD'
]
const colorListLength = 20
function getRandColor () {
 var tem = Math.round(Math.random()  colorListLength)
 return colorList[tem]
}
export default
{
 colorList,
 colorListLength,
 getRandColor
}
</script>

<template>
 <ul>
  <template v-for="item in mainList">
   <div class="projectItem" :style="'box-shadow:1px 1px 10px '+ getColor()">
     <router-link :to="'project/'+item.id">
      ![](item.img)
      <span>{{item.title}}</span>
     </router-link>
   </div>
  </template>
 </ul>
</template>
<script type="text/javascript">
import global_ from 'ponents/tool/Global'
export default {
 data () {
  return {
   getColor: global_.getRandColor,
   mainList: [
    {
     id: 1,
     img: require('../../assets/rankIcon.png'),
     title: '登录界面'
    },
    {
     id: 2,
     img: require('../../assets/rankIndex.png'),
     title: '主页'
    }
   ]
  }
 }
}
</script>
<style scoped type="text/css">
.projectItem
{
 margin: 5px;
 width: 200px;
 height: 120px;
 /border:1px soild;/
 box-shadow: 1px 1px 10px;
}
.projectItem a
{
 min-width: 200px;
}
.projectItem a span
{
 text-align: center;
 display: block;
}
</style>

import global_ from './ponents/tool/Global'
Vue.prototype.GLOBAL = global_

<script type="text/javascript">
export default {
 data () {
  return {
   getColor: this.GLOBAL.getRandColor,
   mainList: [
    {
     id: 1,
     img: require('../../assets/rankIcon.png'),
     title: '登录界面'
    },
    {
     id: 2,
     img: require('../../assets/rankIndex.png'),
     title: '主页'
    }
   ]
  }
 }
}
</script>