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最简单的做法, 使用自定义 ref
<script setup lang="ts"> import { ref, computed, customRef } from "vue"; function useLocalStorage(key: string, initialValue: any) { return customRef((track, trigger) => { return { get() { track(); const storedValue = localStorage.getItem(key); if (storedValue === null) { localStorage.setItem(key, JSON.stringify(initialValue)); return initialValue; } return JSON.parse(storedValue); }, set(newValue: any) { trigger(); localStorage.setItem(key, JSON.stringify(newValue)); }, }; }); } const counter = useLocalStorage("counter", 0); console.log(counter.value); const update = () => counter.value++; </script> <template> <p>Counter: {{ counter }}</p> <button @click="update">Update</button> </template>
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最简单的做法, 使用自定义 ref
The text was updated successfully, but these errors were encountered: