Vue.js中v-html无法渲染Vuetify v-img组件求助
问题原因
v-html仅能渲染普通HTML内容,Vue不会编译、解析其中的Vue组件标签。你写的<v-img>是Vuetify提供的Vue组件,被v-html插入后只会被当作无意义的自定义标签,不会被Vue实例化,因此无法正常渲染出图片。
解决方案
方案1:用渲染函数动态创建v-img组件
将图片配置转为数据,通过Vue渲染函数生成v-img组件并挂载:
<template> <v-card> <v-card-title>2</v-card-title> <div ref="imgContainer"></div> </v-card> </template> <script lang="ts"> import Vue from "vue"; export default Vue.extend({ name: "slot2", data() { return { imgProps: { lazySrc: "https://picsum.photos/id/11/10/6", maxHeight: 150, maxWidth: 250, src: "https://picsum.photos/id/11/500/300" } }; }, mounted() { const imgComponent = new Vue({ render: h => h("v-img", { props: this.imgProps }) }); imgComponent.$mount(this.$refs.imgContainer as HTMLElement); } }); </script>
方案2:直接使用原生img标签(轻量场景)
如果不需要v-img的懒加载过渡、占位符等高级特性,用原生img模拟样式即可:
<template> <v-card> <v-card-title>2</v-card-title> <div v-html="test"></div> </v-card> </template> <script lang="ts"> import Vue from "vue"; export default Vue.extend({ name: "slot2", data() { return { test: `<img loading="lazy" style="max-height:150px;max-width:250px;" src="https://picsum.photos/id/11/500/300" alt="" >` }; }, }); </script>
方案3:编译字符串模板(Vue2专属)
若必须保留字符串模板形式,可通过Vue.compile将模板编译为渲染函数,再通过动态组件渲染:
<template> <v-card> <v-card-title>2</v-card-title> <component :is="renderImg"></component> </v-card> </template> <script lang="ts"> import Vue from "vue"; export default Vue.extend({ name: "slot2", computed: { renderImg() { const template = `<v-img lazy-src="https://picsum.photos/id/11/10/6" max-height="150" max-width="250" src="https://picsum.photos/id/11/500/300" ></v-img>`; const { render } = Vue.compile(template); return { render }; } }, }); </script>
内容的提问来源于stack exchange,提问作者sha
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