npm i vuex -Snpm i pinia -Simport { createStore } from 'vuex'
export default createStore({
//全局state,类似于vue种的data
state() {
return {
vuexmsg: "hello vuex",
name: "xiaoyue",
};
},
//修改state函数
mutations: {
},
//提交的mutation可以包含任意异步操作
actions: {
},
//类似于vue中的计算属性
getters: {
},
//将store分割成模块(module),应用较大时使用
modules: {
}
})import { createApp } from 'vue'
import App from './App.vue'
import store from '@/vuexStore'
createApp(App).use(store).mount('#app')<template>
<div></div>
</template>
<script setup>
import { useStore } from 'vuex'
let vuexStore = useStore()
console.log(vuexStore.state.vuexmsg); //hello vuex
</script>import { createApp } from "vue";
import App from "./App.vue";
import {createPinia} from 'pinia'
const pinia = createPinia()
createApp(App).use(pinia).mount("#app");import { defineStore } from "pinia";
export const storeA = defineStore("storeA", {
state: () => {
return {
piniaMsg: "hello pinia",
};
},
getters: {},
actions: {},
});<template>
<div></div>
</template>
<script setup>
import { storeA } from '@/piniaStore/storeA'
let piniaStoreA = storeA()
console.log(piniaStoreA.piniaMsg); //hello pinia
</script><template>
<div>{{vuexStore.state.vuexmsg}}</div>
</template>
<script setup>
import { useStore } from 'vuex'
let vuexStore = useStore()
vuexStore.state.vuexmsg = 'hello juejin'
console.log(vuexStore.state.vuexmsg)
</script>import { createStore } from "vuex";
export default createStore({
strict: true,
//全局state,类似于vue种的data
state: {
vuexmsg: "hello vuex",
},
//修改state函数
mutations: {
setVuexMsg(state, data) {
state.vuexmsg = data;
},
},
//提交的mutation可以包含任意异步操作
actions: {},
//类似于vue中的计算属性
getters: {},
//将store分割成模块(module),应用较大时使用
modules: {},
});<template>
<div>{{ vuexStore.state.vuexmsg }}</div>
</template>
<script setup>
import { useStore } from 'vuex'
let vuexStore = useStore()
vuexStore.commit('setVuexMsg', 'hello juejin')
console.log(vuexStore.state.vuexmsg) //hello juejin
</script>import { createStore } from "vuex";
export default createStore({
strict: true,
//全局state,类似于vue种的data
state() {
return {
vuexmsg: "hello vuex",
}
},
//修改state函数
mutations: {
setVuexMsg(state, data) {
state.vuexmsg = data;
},
},
//提交的mutation可以包含任意异步操作
actions: {
async getState({ commit }) {
//const result = await xxxx 假设这里进行了请求并拿到了返回值
commit("setVuexMsg", "hello juejin");
},
}
});<template>
<div>{{ vuexStore.state.vuexmsg }}</div>
</template>
<script setup>
import { useStore } from 'vuex'
let vuexStore = useStore()
vuexStore.dispatch('getState')
</script>
<template>
<div>{{ piniaStoreA.piniaMsg }}</div>
</template>
<script setup>
import { storeA } from '@/piniaStore/storeA'
let piniaStoreA = storeA()
console.log(piniaStoreA.piniaMsg); //hello pinia
piniaStoreA.piniaMsg = 'hello juejin'
console.log(piniaStoreA.piniaMsg); //hello juejin
</script>import { defineStore } from "pinia";
export const storeA = defineStore("storeA", {
state: () => {
return {
piniaMsg: "hello pinia",
name: "xiaoyue",
};
},
getters: {},
actions: {},
});import { storeA } from '@/piniaStore/storeA'
let piniaStoreA = storeA()
console.log(piniaStoreA.name); //xiaoyue
piniaStoreA.$patch({
piniaMsg: 'hello juejin',
name: 'daming'
})
console.log(piniaStoreA.name);//damingpiniaStoreA.$patch({
name: 'daming'
})import { storeA } from '@/piniaStore/storeA'
let piniaStoreA = storeA()
cartStore.$patch((state) => {
state.name = 'daming'
state.piniaMsg = 'hello juejin'
})import { defineStore } from "pinia";
export const storeA = defineStore("storeA", {
state: () => {
return {
piniaMsg: "hello pinia",
name: "xiao yue",
};
},
actions: {
setName(data) {
this.name = data;
},
},
});import { storeA } from '@/piniaStore/storeA'
let piniaStoreA = storeA()
piniaStoreA.setName('daming')import { storeA } from '@/piniaStore/storeA'
let piniaStoreA = storeA()
piniaStoreA.$reset()<template>
<div>{{ name }}</div>
</template>
<script setup>
import { storeA } from '@/piniaStore/storeA'
let piniaStoreA = storeA()
let { piniaMsg, name } = piniaStoreA
piniaStoreA.$patch({
name: 'daming'
})
</script>
我们可以发现浏览器并没有更新页面为daming为了解决这个问题,Pinia提供了一个结构方法storeToRefs,我们将组件App.vue使用storeToRefs解构<template>
<div>{{ name }}</div>
</template>
<script setup>
import { storeA } from '@/piniaStore/storeA'
import { storeToRefs } from 'pinia'
let piniaStoreA = storeA()
let { piniaMsg, name } = storeToRefs(piniaStoreA)
piniaStoreA.$patch({
name: 'daming'
})
</script>
我们发现页面已经被更新成daming了import { defineStore } from "pinia";
export const storeA = defineStore("storeA", {
state: () => {
return {
count1: 1,
count2: 2,
};
},
getters: {
sum() {
console.log('我被调用了!')
return this.count1 + this.count2;
},
},
});<template>
<div>{{ piniaStoreA.sum }}</div>
</template>
<script setup>
import { storeA } from '@/piniaStore/storeA'
let piniaStoreA = storeA()
console.log(piniaStoreA.sum) //3
</script>import { storeA } from '@/piniaStore/storeA'
let piniaStoreA = storeA()
console.log(piniaStoreA.sum)
console.log(piniaStoreA.sum)
console.log(piniaStoreA.sum)
piniaStoreA.count1 = 2
console.log(piniaStoreA.sum)
从打印结果我们可以看出只有在首次使用用或者当我们改变sum所依赖的值的时候,getters中的sum才会被调用import { createStore } from "vuex";
export default createStore({
strict: true,
//全局state,类似于vue种的data
state: {
count1: 1,
count2: 2,
},
//类似于vue中的计算属性
getters: {
sum(state){
return state.count1 + state.count2
}
}
});import { defineStore } from "pinia";
export const storeA = defineStore("storeA", {...});
export const storeB = defineStore("storeB", {...});
export const storeC = defineStore("storeB", {...});import { createStore } from "vuex";
const moduleA = {
state: () => ({
count:1
}),
mutations: {
setCount(state, data) {
state.count = data;
},
},
actions: {
getuser() {
//do something
},
},
getters: { ... }
}
const moduleB = {
state: () => ({ ... }),
mutations: { ... },
actions: { ... }
}
export default createStore({
strict: true,
//全局state,类似于vue种的data
state() {
return {
vuexmsg: "hello vuex",
name: "xiaoyue",
};
},
modules: {
moduleA,
moduleB
},
});import { useStore } from 'vuex'
let vuexStore = useStore()
console.log(vuexStore.state.moduleA.count) //1
vuexStore.commit('setCount', 2)
console.log(vuexStore.state.moduleA.count) //2
vuexStore.dispatch('getuser')const moduleA = {
namespaced: true,
state: () => ({
count: 1,
}),
mutations: {
setCount(state, data) {
state.count = data;
},
},
actions: {
getuser() {
//do something
},
},
}vuexStore.commit('moduleA/setCount', 2)
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