Vue3中使用Pinia修改State的五种方式

import { defineStore } from 'pinia';
import { Names } from './store-name';
export const useTestStore = defineStore(Names.Test, {
    state:()=>{
        return {
            current:1111,
            name: '小满111'
        }
    },
    getters:{ // 类似computed计算属性 同样有缓存的
    },
    actions:{ // 类似 methods方法 可以做同步、异步操作 提交state
    }
});

<template>
    <div>
      pinia: {{ Test.current }} --- {{ Test.name }}
      <button @click="change">change</button>
    </div>
</template>
<script setup lang="ts">
import  {useTestStore} from './store';
const Test = useTestStore();
// 第一种修改State的方式
const change = () => {
   Test.current++
}
</script>
<style scoped>
</style>

<template>
    <div>
      pinia: {{ Test.current }} --- {{ Test.name }}
      <button @click="change">change</button>
    </div>
</template>
<script setup lang="ts">
import  {useTestStore} from './store';
const Test = useTestStore();
// 第二种修改State的方式 批量修改对象属性
const change = () => {
  Test.$patch({
    current: 999,
    name: '李四'
  })
}
</script>
<style scoped>
</style>

<template>
    <div>
      pinia: {{ Test.current }} --- {{ Test.name }}
      <button @click="change">change</button>
    </div>
</template>
<script setup lang="ts">
import  {useTestStore} from './store';
const Test = useTestStore();
// 第三种修改State的方式 向$patch中传入工厂函数 可以写逻辑
const change = () => {
  Test.$patch((state) => { 
    if(state.current>1113){
      state.current--;
      state.name = '罗翔老师';
    } else {
      state.current++;
      state.name = '罗永浩老师';
    }
  })
}
</script>
<style scoped>
</style>

<template>
    <div>
      pinia: {{ Test.current }} --- {{ Test.name }}
      <button @click="change">change</button>
    </div>
</template>
<script setup lang="ts">
import  {useTestStore} from './store';
const Test = useTestStore();
// 第四种修改State的方式 覆盖这个state对象
const change = () => {
  Test.$state = {
    current: 1024,
    name: '罗城将军'
  }
}
</script>
<style scoped>
</style>

import { defineStore } from 'pinia';
import { Names } from './store-name';
export const useTestStore = defineStore(Names.Test, {
    state:()=>{
        return {
            current:1111,
            name: '小满111'
        }
    },
    getters:{ // 类似computed计算属性 同样有缓存的
    },
    actions:{ // 类似 methods方法 可以做同步、异步操作 提交state
        setCurrent(num:number){ // 注意此处不要写箭头函数,否则this指向就不对了
            this.current = num;
        }
    }
});

<template>
    <div>
      pinia: {{ Test.current }} --- {{ Test.name }}
      <button @click="change">change</button>
    </div>
</template>
<script setup lang="ts">
import  {useTestStore} from './store';
const Test = useTestStore();
// 第五种 
const change = () => {
  Test.setCurrent(5173);  // 直接调用setCurrent函数
}
</script>
<style scoped>
</style>