vue3 数组变化 动画
时间: 2023-11-15 12:54:03 浏览: 167
在Vue 3中,可以使用transition组件来实现数组变化的动画效果。首先,你需要在数组上使用Vue的响应式方法,如`ref`或`reactive`,以确保数组的变化可以被Vue追踪。然后,使用`v-for`指令将数组的每个元素渲染为相应的DOM元素。接下来,在包裹数组元素的容器上使用`transition-group`组件,并设置`name`属性指定过渡效果的名称。最后,在容器内部使用`v-move`指令来为数组元素提供过渡动画效果。
以下是一个示例代码,演示了如何在Vue 3中实现数组变化的动画效果:
```html
<template>
<transition-group name="fade">
<div v-for="item in items" :key="item.id" class="item">
{{ item.text }}
</div>
</transition-group>
</template>
<script>
import { ref } from 'vue';
export default {
setup() {
const items = ref([
{ id: 1, text: 'Item 1' },
{ id: 2, text: 'Item 2' },
{ id: 3, text: 'Item 3' }
]);
// 在某个事件触发时更新数组
const updateItems = () => {
items.value = [
{ id: 1, text: 'New Item 1' },
{ id: 2, text: 'Item 2' },
{ id: 3, text: 'New Item 3' }
];
};
return {
items,
updateItems
};
}
};
</script>
```
在上面的代码中,我们使用了`transition-group`组件来包裹具有动画效果的数组元素,并将其名称设置为`fade`。在数组发生变化时,Vue会自动应用过渡效果,使得旧元素淡出,新元素淡入。
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