Vuex不允许在组件内部直接修改共享数据,需要在mutations中修改数据,所以涉及到双向绑定不能使用v-model
需要增加,删除数据,并且可以修改每一项的done
state: {
list: [{
id: 1,
name: '吃吃',
done: false
},
{
id: 2,
name: '喝喝',
done: false
},
{
id: 3,
name: '学vue⭐',
done: true
}
]
},
<div v-for="(item, index) in list" :key="index">
<span> id: {{ item.id }} </span>
<span> name: {{ item.name }} </span>
<span> done: {{ item.done }} </span>
修改done:
<input
type="text"
:value="item.done"
/>
<hr />
</div>
...
...
import { mapState } from 'vuex'
export default {
computed: {
...mapState('data', ['list'])
},
}
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mutations: {
add(state) {
state.list.push({ id: 4, name: '睡觉', done: true })
},
remove(state) {
state.list.pop()
}
},
<button @click="add">增加数据</button>
<button @click="remove">删除数据</button>
...
...
import { mapState, mapMutations } from 'vuex'
export default {
computed: {
...mapState('data', ['list'])
},
methods: {
...mapMutations('data', ['add']),
...mapMutations('data', ['remove']),
}
5.修改done属性
changeDone
,并传入index实参。修改done:
<input
type="text"
:value="item.done"
@input="changeDone(index)"
:id="index"
/>
{index,val}
changeDone(index) {
let val = document.getElementById(index).value
this.$store.commit('data/changeDone', { index, val })
}
mutations: {
changeDone(state, { index, val }) {
state.list[index].done = val
}
}