vue3reactive初始话空数组

在Vue3中，你可以使用reactive函数来初始化一个空数组。你需要首先导入reactive函数，然后使用它来创建一个响应式的空数组。例如：

import { reactive } from 'vue';
let arr = reactive([]);

这样，你就成功初始化了一个空数组arr，它是一个响应式的数组，可以在后续的代码中对其进行修改和监听变化。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
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