An in-depth analysis of how to use svg icons in vue3+vite

svg images are widely used in projects. The following article will introduce how to use svg icons in vue3 vite. I hope it will be helpful to everyone!

vite-plugin-svg-icons

• Preloading is done when the project is running Generate all icons, only need to operate dom once
• High performance Built-in cache, only when the file is modified

(Learning video sharing: vuejs tutorial)

Installation

##node version: >=12.0 .0 vite version: >=2.0.0

yarn add vite-plugin-svg-icons -D
# or
npm i vite-plugin-svg-icons -D
# or
pnpm install vite-plugin-svg-icons -D

Use

##vite Configuration plug-in in .config.ts

• import { createSvgIconsPlugin } from 'vite-plugin-svg-icons'
  import path from 'path'
  
  export default () => {
    return {
      plugins: [
        createSvgIconsPlugin({
          // 指定需要缓存的图标文件夹
          iconDirs: [path.resolve(process.cwd(), 'src/icons')],
          // 指定symbolId格式
          symbolId: 'icon-[dir]-[name]',
  
          /**
           * 自定义插入位置
           * @default: body-last
           */
          // inject?: 'body-last' | 'body-first'
  
          /**
           * custom dom id
           * @default: __svg__icons__dom__
           */
          // customDomId: '__svg__icons__dom__',
        }),
      ],
    }
  }

Introduce the registration script in src/main.js

• import 'virtual:svg-icons-register'

How to add a component Use

• to create the SvgIcon component

/src/components/SvgIcon/index. vue

<template>
  <svg aria-hidden="true" class="svg-icon" :width="props.size" :height="props.size">
    <use :xlink:href="symbolId" :fill="props.color" />
  </svg>
</template>

<script setup>
import { computed } from &#39;vue&#39;
const props = defineProps({
  prefix: {
    type: String,
    default: &#39;icon&#39;
  },
  name: {
    type: String,
    required: true
  },
  color: {
    type: String,
    default: &#39;#333&#39;
  },
  size: {
    type: String,
    default: &#39;1em&#39;
  }
})

const symbolId = computed(() => `#${props.prefix}-${props.name}`)
</script>

• icons directory structure

  # src/icons
  
  - icon1.svg
  - icon2.svg
  - icon3.svg
  - dir/icon1.svg

• Global registration component

  # src/main.js
  
  import { createApp } from 'vue'
  import App from './App.vue'
  import router from './router'
  
  import ElementPlus from 'element-plus'
  import 'element-plus/dist/index.css'
  
  import svgIcon from "@/components/SvgIcon/index.vue";
  import 'virtual:svg-icons-register'
  
  createApp(App)
      .use(ElementPlus)
      .use(router)
      .component('svg-icon', svgIcon)
      .mount('#app')

• Page uses

  <template>
      <svg-icon v-if="props.icon" :name="props.icon" />
      <span v-if="props.title" slot=&#39;title&#39;>{{ props.title }}</span>
  </template>
  
  <script setup>
  
  const props = defineProps({
      icon: {
          type: String,
          default: &#39;&#39;
      },
      title: {
          type: String,
          default: &#39;&#39;
      }
  })
  </script>

to get all SymbolIds

import ids from 'virtual:svg-icons-names'
// => ['icon-icon1','icon-icon2','icon-icon3']

(Learning video sharing: web front-end development

, Introduction to programming)

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