在vue3+vite项目中,在使用svg与vue2.x版本的用法有所不同,网上有些方法直接使用不能显示出来,就此做了修改并测试可以正常使用,在此总结记录。
日期: 2022-01-10
项目环境版本
node -v
v16.13.0
"vue": "^3.2.6",
"vite": "^2.5.4",
项目目录
创建 svgBuilder.js
插件
在 src/plugins
下创建 svgBuilder.js
, 内容如下:
import { readFileSync, readdirSync } from 'fs'
let idPerfix = ''
const svgTitle = /<svg([^>+].*?)>/
const clearHeightWidth = /(width|height)="([^>+].*?)"/g
const hasViewBox = /(viewBox="[^>+].*?")/g
const clearReturn = /(\r)|(\n)/g
function findSvgFile(dir) {
const svgRes = []
const dirents = readdirSync(dir, {
withFileTypes: true
})
for (const dirent of dirents) {
if (dirent.isDirectory()) {
svgRes.push(...findSvgFile(dir + dirent.name + '/'))
} else {
const svg = readFileSync(dir + dirent.name)
.toString()
.replace(clearReturn, '')
.replace(svgTitle, ($1, $2) => {
let width = 0
let height = 0
let content = $2.replace(clearHeightWidth, (s1, s2, s3) => {
if (s2 === 'width') {
width = s3
} else if (s2 === 'height') {
height = s3
}
return ''
})
if (!hasViewBox.test($2)) {
content += `viewBox="0 0 ${width} ${height}"`
}
return `<symbol id="${idPerfix}-${dirent.name.replace('.svg', '')}" ${content}>`
})
.replace('</svg>', '</symbol>')
svgRes.push(svg)
}
}
return svgRes
}
export const svgBuilder = (path, perfix = 'icon') => {
if (path === '') return
idPerfix = perfix
const res = findSvgFile(path)
return {
name: 'svg-transform',
transformIndexHtml(html) {
return html.replace(
'<body>',
`
<body>
<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" style="position: absolute; width: 0; height: 0">
${res.join('')}
</svg>
`
)
}
}
}
vite 中配置插件
在项目根目录下的vite配置文件 vite.config.ts
中进行配置:
import { defineConfig } from 'vite'
import vue from '@vitejs/plugin-vue'
import { svgBuilder } from './src/plugins/svgBuilder';
export default defineConfig({
...,
plugins: [
vue(),
svgBuilder('./src/assets/svg/') // 这里已经将src/icons/svg/下的svg全部导入,无需再单独导入
]
})
创建 svgIcon 组件
在 src/components/svgIcon/index.vue
中创建 svgIcon 组件,内容如下:
<template>
<svg :class="svgClass" aria-hidden="true" v-on="$attrs" :style="{color: props.color}">
<use :xlink:href="iconName" />
</svg>
</template>
<script lang="ts">
export default {
name: 'SvgIcon'
}
</script>
<script setup lang="ts">
/**
* 名称:SvgIcon
* @param name String required
* @param color String
* 依赖:src/plugins/svgBuilder.js 需要在 vite中配置
* 使用方式:
* 在 template 中使用 <svg-icon name="bug"/>
*/
import { computed } from 'vue'
interface Props {
name: {
type: string,
required: true
},
color: {
type: string,
default: ''
}
}
/* data */
const props = defineProps<Props>() // 获取props defineProps<{ msg: string }>()
const iconName = computed((): string => `#icon-${props.name}`)
const svgClass = computed((): string => {
if (props.className) {
return `svg-icon icon-${props.name}`
} else {
return 'svg-icon'
}
})
</script>
<style scoped>
.svg-icon {
width: 1em;
height: 1em;
vertical-align: -0.15em;
fill: currentColor;
overflow: hidden;
}
</style>
全局注册
在项目入口文件 src/main.ts
中进行全局注册:
import Vue, { createApp } from 'vue'
import App from './app.vue'
import SvgIcon from './components/SvgIcon/index.vue'
const app = createApp(App)
app.component('svg-icon', SvgIcon).mount('#app')
创建svg
在 src/assets/svg
下创建 bug.svg
和 logo.svg
bug.svg 内容如下:
<svg width="128" height="128" xmlns="http://www.w3.org/2000/svg">
<path
d="M127.88 73.143c0 1.412-.506 2.635-1.518 3.669-1.011 1.033-2.209 1.55-3.592 1.55h-17.887c0 9.296-1.783 17.178-5.35 23.645l16.609 17.044c1.011 1.034 1.517 2.257 1.517 3.67 0 1.412-.506 2.635-1.517 3.668-.958 1.033-2.155 1.55-3.593 1.55-1.438 0-2.635-.517-3.593-1.55l-15.811-16.063a15.49 15.49 0 0 1-1.196 1.06c-.532.434-1.65 1.208-3.353 2.322a50.104 50.104 0 0 1-5.192 2.974c-1.758.87-3.94 1.658-6.546 2.364-2.607.706-5.189 1.06-7.748 1.06V47.044H58.89v73.062c-2.716 0-5.417-.367-8.106-1.102-2.688-.734-5.003-1.631-6.945-2.692a66.769 66.769 0 0 1-5.268-3.179c-1.571-1.057-2.73-1.94-3.476-2.65L33.9 109.34l-14.611 16.877c-1.066 1.14-2.344 1.711-3.833 1.711-1.277 0-2.422-.434-3.434-1.304-1.012-.978-1.557-2.187-1.635-3.627-.079-1.44.333-2.705 1.236-3.794l16.129-18.51c-3.087-6.197-4.63-13.644-4.63-22.342H5.235c-1.383 0-2.58-.517-3.592-1.55S.125 74.545.125 73.132c0-1.412.506-2.635 1.518-3.668 1.012-1.034 2.21-1.55 3.592-1.55h17.887V43.939L9.308 29.833c-1.012-1.033-1.517-2.256-1.517-3.669 0-1.412.505-2.635 1.517-3.668 1.012-1.034 2.21-1.55 3.593-1.55s2.58.516 3.593 1.55l13.813 14.106h67.396l13.814-14.106c1.012-1.034 2.21-1.55 3.592-1.55 1.384 0 2.581.516 3.593 1.55 1.012 1.033 1.518 2.256 1.518 3.668 0 1.413-.506 2.636-1.518 3.67l-13.814 14.105v23.975h17.887c1.383 0 2.58.516 3.593 1.55 1.011 1.033 1.517 2.256 1.517 3.668l-.005.01zM89.552 26.175H38.448c0-7.23 2.489-13.386 7.466-18.469C50.892 2.623 56.92.082 64 .082c7.08 0 13.108 2.541 18.086 7.624 4.977 5.083 7.466 11.24 7.466 18.469z"
/>
</svg>
logo.svg 内容如下:
<svg t="1641719191348" class="icon" viewBox="0 0 1024 1024" version="1.1" xmlns="http://www.w3.org/2000/svg" p-id="3885" width="128" height="128">
<path d="M787.1 370.11h72.56a15.5 15.5 0 0 0 15.5-15.5V214.42a5.25 5.25 0 0 0-1.54-3.75c-13-12.72-28.46-3.75-28.46 8.84v115.43a5.17 5.17 0 0 1-5.17 5.17H782a5.25 5.25 0 0 0-3.75 1.54c-12.71 12.95-3.74 28.46 8.85 28.46z" fill="#FF8429" p-id="3886"></path>
<path d="M727.1 355.6m-15 0a15 15 0 1 0 30 0 15 15 0 1 0-30 0Z" fill="#FF8429" p-id="3887"></path>
<path d="M382.16 38.11h-345v345a100 100 0 0 0 100 100h345v-345a100 100 0 0 0-100-100z m20 365h-265a20 20 0 0 1-20-20v-265h265a20 20 0 0 1 20 20z" fill="#FED805" p-id="3888"></path>
<path d="M542.16 138.11v345h345a100 100 0 0 0 100-100v-345h-345a100 100 0 0 0-100 100z m345 265h-265v-265a20 20 0 0 1 20-20h265v265a20 20 0 0 1-20 20zM37.16 641.11v345h345a100 100 0 0 0 100-100v-345h-345a100 100 0 0 0-100 100z m345 265h-265v-265a20 20 0 0 1 20-20h265v265a20 20 0 0 1-20 20z" fill="#1FD389" p-id="3889"></path>
<path d="M887.16 541.11h-345v345a100 100 0 0 0 100 100h345v-345a100 100 0 0 0-100-100z m20 365h-265a20 20 0 0 1-20-20v-265h265a20 20 0 0 1 20 20z" fill="#FF8429" p-id="3890"></path>
</svg>
其实就是从 iconfont 官网上复制下来的。
使用
在项目中配置好之后就可以使用了。以上两张 svg 图片的使用如下:
<svg-icon name="logo"/>
<svg-icon name="bug" color="red"/>
效果图如下: