我在Electron + VueJS 2.X中有一个基本的应用程序(因为我是一个完整的初学者),我希望有一个v-for list的排序功能。我已经半工作了,我可以排序,但如果第二次点击应用,我想反向排序。我不确定解决这个问题的最佳方式,也许我现在的目标路径需要改进。请让我知道如何实现这一目标。
我正在使用' selectedCategory'跟踪当前类别,如果它出现两次会运行return this.items.reverse()
,但我无法让它工作。
我已经清理了代码以帮助提高可读性。
export default {
name: 'home-page',
data() {
return {
selectedCategory: null,
items: [{
id: 1,
name: 'Person 1',
leave: 123.45
},
{
id: 2,
name: 'John Smith',
leave: 13.45
},
{
id: 3,
name: 'Bill Smith',
leave: 23.45
},
{
id: 4,
name: 'John Doe',
leave: 133.53
}
]
}
},
methods: {
sortedByName: function() {
function compare(a, b) {
if (a.name < b.name) {
return -1
}
if (a.name > b.name) {
return 1
}
return 0
}
this.selectedCategory = 'name'
return this.items.sort(compare)
},
sortedByNumber: function() {
// Same as above but a.leave and b.leave
},
sortedById: function() {
// Same as above but a.id and b.id
}
}
}
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<template>
<a v-on:click="sortedById()">ID</a>
<a v-on:click="sortedByName()">User</a>
<a v-on:click="sortedByNumber()">Leave Owing</a>
<div id="page_list">
<div class="user_row" v-for="item in items">
<div class="user_status">{{ item.id }}</div>
<div class="username">{{ item.name }}</div>
<div class="leave_owing">{{ item.leave }}</div>
</div>
</div>
</template>
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由于
答案 0 :(得分:2)
你可以使用计算
var app = new Vue({
el: '#app',
computed: {
sortedData () {
if(!this.sort.field){
return this.items
}
return this.items.concat().sort((a,b)=>{
if(this.sort.desc){
return a[this.sort.field] > b[this.sort.field] ? -1:1
}else{
return a[this.sort.field] > b[this.sort.field] ? 1:-1
}
})
}
},
data () {
return {
sort: {
field: '',
desc: true
},
items: [
{ id: 1, name: 'Person 1', leave: 123.45 },
{ id: 2, name: 'John Smith', leave: 13.45 },
{ id: 3, name: 'Bill Smith', leave: 23.45 },
{ id: 4, name: 'John Doe', leave: 133.53 }
]
}
},
methods: {
doSort (field) {
if(field == this.sort.field){
this.sort.desc = !this.sort.desc
}else{
this.sort.field = field;
this.sort.desc = true;
}
}
}
})
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.user_row{
display:flex;
}
.user_row>div{
flex:1;
text-align: center;
}
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<script src="https://cdn.jsdelivr.net/npm/vue@2.5.16/dist/vue.js"></script>
<div id="app">
<a v-on:click="doSort('id')" href="javascript:">ID<span v-if="sort.field=='id'">({{sort.desc?'desc':'asc'}})</span></a>
<a v-on:click="doSort('name')" href="javascript:">User<span v-if="sort.field=='name'">({{sort.desc?'desc':'asc'}})</span></a>
<a v-on:click="doSort('leave')" href="javascript:">Leave Owing<span v-if="sort.field=='leave'">({{sort.desc?'desc':'asc'}})</span></a>
<div id="page_list">
<div class="user_row" v-for="item in sortedData">
<div class="user_status">{{ item.id }}</div>
<div class="username">{{ item.name }}</div>
<div class="leave_owing">{{ item.leave }}</div>
</div>
</div>
</div>
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