svg-icon

1.svg-sprite-loader配置(url-loader配置)

{
  test: /\.svg$/,
  loader: 'svg-sprite-loader',
  include: [resolve('src/icons')],
  options: {
    symbolId: 'icon-[name]'
  }
},
{
  test: /\.(png|jpe?g|gif|svg)(\?.*)?$/,
  loader: 'url-loader',
  exclude: [resolve('src/icons')],
  options: {
    limit: 10000,
    name: utils.assetsPath('img/[name].[hash:7].[ext]')
  }
},

2.svg-icon组件

<template>
  <svg :class="svgClass" aria-hidden="true">
    <use :xlink:href="iconName"></use>
  </svg>
</template>

<script>
export default {
  name: 'svg-icon',
  props: {
    iconClass: {
      type: String,
      required: true
    },
    className: {
      type: String
    }
  },
  computed: {
    iconName() {
      return `#icon-${this.iconClass}`
    },
    svgClass() {
      if (this.className) {
        return 'svg-icon ' + this.className
      } else {
        return 'svg-icon'
      }
    }
  }
}
</script>

<style scoped>
.svg-icon {
  width: 1.5em;
  height: 1.5em;
  vertical-align: -0.4em;
  margin-right: 5px;
  fill: currentColor;
  overflow: hidden;
}
</style>

3.注册组件

import Vue from 'vue'
import SvgIcon from '@/components/SvgIcon'// svg组件

// register globally
Vue.component('svg-icon', SvgIcon)

//引入所有Icon文件
const request = require.context('./svg', false, /\.svg$/)
request.keys().forEach(request)

原理：
symbol + use:xlink:href;
svg-sprite-loader生成雪碧图;
require.context动态引入所有文件；