createGlobalState

将状态保留在全局范围内，以便可以跨 Vue 实例重用。

¥Keep states in the global scope to be reusable across Vue instances.

示例

源代码演练场

name: Banana
color: Yellow
size: Medium

用法

¥Usage

没有持久性（存储在内存中）

¥Without Persistence (Store in Memory)

// store.ts
import { createGlobalState } from '@vueuse/core'
import { shallowRef } from 'vue'

export const useGlobalState = createGlobalState(
  () => {
    const count = shallowRef(0)
    return { count }
  }
)

一个更大的例子：

¥A bigger example:

// store.ts
import { createGlobalState } from '@vueuse/core'
import { computed, shallowRef } from 'vue'

export const useGlobalState = createGlobalState(
  () => {
    // state
    const count = shallowRef(0)

    // getters
    const doubleCount = computed(() => count.value * 2)

    // actions
    function increment() {
      count.value++
    }

    return { count, doubleCount, increment }
  }
)

使用持久性

¥With Persistence

与 useStorage 一起存储在 localStorage 中：

¥Store in localStorage with useStorage:

// store.ts
import { createGlobalState, useStorage } from '@vueuse/core'

export const useGlobalState = createGlobalState(
  () => useStorage('vueuse-local-storage', 'initialValue'),
)

// component.ts
import { useGlobalState } from './store'

export default defineComponent({
  setup() {
    const state = useGlobalState()
    return { state }
  },
})