运用vuex实现计时器操作 要求1.使用actions实现异步操作,点击计数计数延迟一秒加一
时间: 2023-11-22 09:55:40 浏览: 36
首先需要在state中定义计时器的初始值和是否在进行计时的状态:
```javascript
// state
const state = {
count: 0,
isTiming: false
};
```
然后定义mutations来修改state中的计时器值和状态:
```javascript
// mutations
const mutations = {
incrementCount(state) {
state.count++;
},
setIsTiming(state, isTiming) {
state.isTiming = isTiming;
}
};
```
接下来定义actions来执行异步操作,在actions中先调用`setIsTiming`将状态设置为正在计时,然后使用setTimeout模拟延迟一秒后再调用`incrementCount`增加计数器的值:
```javascript
// actions
const actions = {
incrementCountAsync({ commit, state }) {
if (!state.isTiming) {
commit('setIsTiming', true);
setTimeout(() => {
commit('incrementCount');
commit('setIsTiming', false);
}, 1000);
}
}
};
```
最后在组件中使用mapState、mapActions将计时器的值和异步操作映射到组件的data和methods中:
```javascript
// 组件
<template>
<div>
<h1>{{ count }}</h1>
<button @click="incrementCountAsync">计数</button>
</div>
</template>
<script>
import { mapState, mapActions } from 'vuex';
export default {
computed: {
...mapState(['count'])
},
methods: {
...mapActions(['incrementCountAsync'])
}
};
</script>
```