createGlobalState

分类

导出大小

152 B

最后更改

4 个月前

演示

name: 'Banana'
color: 'Yellow'
size: 'Medium'

用法

无持久化 (存储在内存中)

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

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

一个更大的例子

import { createGlobalState } from '@vueuse/core'
// store.js
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 }
  }
)

持久化

使用 useStorage 存储在 localStorage 中

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

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

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

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

类型声明

typescript

/**
 * Keep states in the global scope to be reusable across Vue instances.
 *
 * @see https://vueuse.org.cn/createGlobalState
 * @param stateFactory A factory function to create the state
 */
export declare function createGlobalState<Fn extends AnyFn>(
  stateFactory: Fn,
): Fn