vue实现列表demo
以下是一个基于 Vue.js 的列表实现示例，包含基础功能与关键代码解析：
基础列表渲染
<template>
<div>
<ul>
<li v-for="(item, index) in items" :key="index">
{{ item.name }}
</li>
</ul>
</div>
</template>
<script>
export default {
data() {
return {
items: [
{ name: 'Item 1' },
{ name: 'Item 2' },
{ name: 'Item 3' }
]
}
}
}
</script>带交互功能的列表
<template>
<div>
<button @click="addItem">Add Item</button>
<ul>
<li v-for="(item, index) in items" :key="item.id">
{{ item.text }}
<button @click="removeItem(index)">×</button>
</li>
</ul>
</div>
</template>
<script>
export default {
data() {
return {
items: [
{ id: 1, text: 'Sample Item 1' },
{ id: 2, text: 'Sample Item 2' }
],
nextId: 3
}
},
methods: {
addItem() {
this.items.push({
id: this.nextId,
text: `New Item ${this.nextId}`
})
this.nextId++
},
removeItem(index) {
this.items.splice(index, 1)
}
}
}
</script>动态样式绑定
<template>
<ul>
<li
v-for="item in filteredItems"
:key="item.id"
:class="{ 'active': item.isActive }"
@click="toggleActive(item)"
>
{{ item.name }}
</li>
</ul>
</template>
<script>
export default {
data() {
return {
items: [
{ id: 1, name: 'Apple', isActive: false },
{ id: 2, name: 'Banana', isActive: true }
]
}
},
computed: {
filteredItems() {
return this.items.filter(item => item.name.includes('a'))
}
},
methods: {
toggleActive(item) {
item.isActive = !item.isActive
}
}
}
</script>
<style>
.active {
background-color: #f0f0f0;
font-weight: bold;
}
</style>服务端数据获取
<template>
<div v-if="loading">Loading...</div>
<ul v-else>
<li v-for="post in posts" :key="post.id">
<h3>{{ post.title }}</h3>
<p>{{ post.body }}</p>
</li>
</ul>
</template>
<script>
import axios from 'axios'
export default {
data() {
return {
posts: [],
loading: true
}
},
async created() {
try {
const response = await axios.get('https://jsonplaceholder.typicode.com/posts')
this.posts = response.data.slice(0, 5)
} catch (error) {
console.error(error)
} finally {
this.loading = false
}
}
}
</script>关键注意事项：
- 始终为
v-for指定唯一的:key属性 - 复杂列表建议使用计算属性进行数据处理
- 大量数据考虑使用虚拟滚动优化性能
- 表单操作时注意 Vue 的响应式更新机制
