：咱前端用到svg的地方多了去了 这可得会

目录

下载安装 svg

配置config文件   在vue.config.js

创建icon文件夹，存放svg格式图片

 icon/index.js

创建组件components  ---> SvgIcon

src/utils/validate.js

在main.js引入

---

下载安装 svg

npm install svg-sprite-loader --save-dev

配置config文件   在vue.config.js

'use strict'
const path = require('path')function resolve(dir) {return path.join(__dirname, dir)
}module.exports = {chainWebpack (config) {// when there are many pages, it will cause too many meaningless requestsconfig.plugins.delete('prefetch')// set svg-sprite-loaderconfig.module.rule('svg').exclude.add(resolve('src/icons')).end()config.module.rule('icons').test(/\.svg$/).include.add(resolve('src/icons')).end().use('svg-sprite-loader').loader('svg-sprite-loader').options({symbolId: 'icon-[name]'}).end()}
}

创建icon文件夹，存放svg格式图片

 icon/index.js

import Vue from 'vue'
import SvgIcon from '@/components/SvgIcon'// svg component// register globally
Vue.component('svg-icon', SvgIcon)const req = require.context('./svg', false, /\.svg$/)
const req2 = require.context('./svg2', false, /\.svg$/)
const req3 = require.context('./svgxun', false, /\.svg$/)
const requireAll = requireContext => requireContext.keys().map(requireContext)
requireAll(req)
requireAll(req2)
requireAll(req3)

创建组件components  ---> SvgIcon

<template><div v-if="isExternal" :style="styleExternalIcon" class="svg-external-icon svg-icon" v-on="$listeners" /><svg v-else :class="svgClass" aria-hidden="true" v-on="$listeners"><use :xlink:href="iconName" /></svg>
</template><script>
import { isExternal } from '@/utils/validate'export default {name: 'SvgIcon',props: {iconClass: {type: String,required: true},className: {type: String,default: ''}},computed: {isExternal() {return isExternal(this.iconClass)},iconName() {return `#icon-${this.iconClass}`},svgClass() {if (this.className) {return 'svg-icon ' + this.className} else {return 'svg-icon'}},styleExternalIcon() {return {mask: `url(${this.iconClass}) no-repeat 50% 50%`,'-webkit-mask': `url(${this.iconClass}) no-repeat 50% 50%`}}}
}
</script><style scoped>
.svg-icon {width: 1em;height: 1em;vertical-align: -0.15em;fill: currentColor;overflow: hidden;
}.svg-external-icon {background-color: currentColor;mask-size: cover!important;display: inline-block;
}
</style>

src/utils/validate.js

//加入
export function isExternal(path) {return /^(https?:|mailto:|tel:)/.test(path)
}

在main.js引入

 开始正式使用

 <div><svg-icon icon-class="shopping" class-name="card-panel-icon" /></div>

我遇到一个问题 报错提示：
 

​​​​​​​Missing required prop: "iconClass"  found in  ---> <SvgIcon> at src/components/SvgIcon/index.vue.....

说是缺少必要属性 查看前人代码最后.....

 <el-input class="login-input" v-model="loginForm.code" @keyup.enter.native="handleLogin"><!--就是因为 没有icon-class属性所以会报上边的错 --><svg-icon slot="prefix" class="el-input__icon input-icon validCode" /></el-input>//结果看style <style rel="stylesheet/scss" lang="scss">.validCode {background: url("../assets/image/verification.png") no-repeat;background-size: 18px 21px;}</style>

........