Managing icons in Vue.js can be tricky. Icon fonts are convenient but lack customization flexibility, and version control can be a nightmare due to their binary nature. SVGs offer a superior solution, but maintaining ease of use and efficient management requires a thoughtful approach.
This article presents an ideal SVG icon system for Vue.js applications, focusing on simplicity and maintainability:
- Icon Addition/Removal: Simply add or delete SVGs from a designated folder.
-
Usage: Use icons in templates with the straightforward syntax
<svg-icon icon="rocket"></svg-icon>
. -
Styling: Scale and color icons using CSS
font-size
andcolor
properties, mimicking icon font behavior. - Optimization: Avoids SVG code duplication for multiple instances of the same icon.
- Webpack Integration: No webpack configuration changes are needed.
This system is built using two small, single-file Vue components and requires:
- Webpack: Assumed if using the Vue CLI.
-
svg-inline-loader
: Installable vianpm install svg-inline-loader --save-dev
. This loader cleans up unnecessary parts of the SVG code.
The SVG Sprite Component (SvgSprite.vue
)
To prevent SVG code repetition, we create an SVG sprite—a hidden SVG containing all other SVG icons. Icons are accessed via the <use></use>
tag referencing the icon's ID: <svg><use xlink:href="#rocket"></use></svg>
. The SvgSprite
component implements this:
<template> <svg height="0" style="display: none;" v-html="$options.svgSprite" width="0"></svg> </template> <script> const svgContext = require.context( '!svg-inline-loader?' 'removeTags=true' // Remove title tags, etc. '&removeSVGTagAttrs=true' // Remove attributes '&removingTagAttrs=fill' // Remove fill attributes '!@/assets/icons', // Icon directory true, // Search subdirectories /\w \.svg$/i // Only include SVG files ); const symbols = svgContext.keys().map(path => { const id = path.replace(/^\.\/(.*)\.\w $/, '$1'); // Extract ID from filename const content = svgContext(path); // Get SVG content return content.replace('<svg', `<symbol id="${id}"`).replace('svg>', 'symbol>'); // Convert to symbol }); export default { name: 'SvgSprite', svgSprite: symbols.join('\n'), // Concatenate symbols }; </script>
The template includes a hidden <svg></svg>
element whose content is dynamically generated by $options.svgSprite
. The script uses require.context
with svg-inline-loader
to process SVGs, removing unnecessary tags and attributes. It then converts each SVG into a <symbol></symbol>
element, adding a unique ID.
Place this component at the top of your App.vue
file.
The Icon Component (SvgIcon.vue
)
The SvgIcon
component is simpler, using the <use></use>
tag to reference icons from the sprite:
<template> <svg class="icon" :class="{ 'icon-spin': spin }"> <use :xlink:href="`#${icon}`"></use> </svg> </template> <script> export default { name: 'SvgIcon', props: { icon: { type: String, required: true }, spin: { type: Boolean, default: false }, }, }; </script> <style scoped> svg.icon { fill: currentColor; height: 1em; margin-bottom: 0.125em; vertical-align: middle; width: 1em; } svg.icon-spin { animation: icon-spin 2s infinite linear; } @keyframes icon-spin { from { transform: rotate(0deg); } to { transform: rotate(359deg); } } </style>
The CSS styles the icon to behave like an icon font, enabling easy color and size adjustments. A spin
prop adds animation.
Register this component in main.js
:
import Vue from 'vue' import SvgIcon from '@/components/SvgIcon.vue' Vue.component('svg-icon', SvgIcon)
This system provides a clean, efficient, and easily maintainable solution for managing SVG icons in your Vue.js applications. Further improvements could include handling non-square aspect ratios and broader framework/build tool compatibility.
The above is the detailed content of A Font-Like SVG Icon System for Vue. For more information, please follow other related articles on the PHP Chinese website!

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