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1、视图标签
<div>
<p v-for="(item, index) in list">
<span>{{item.title}}</span>
<span>{{item.name}}</span>
</p>
</div>
<div v-if="showList.length > 6" v-on:click="showMore=!showMore">
<span>{{showMore?'查看更多':'收起'}}</span>
</div>
2、data数据
data() {
return {
showMore: true,
list:[...]
}
}
3、计算属性(set方法里的val值就是get方法返回的值)
computed: {
showList: {
get: function () {
if (this.showMore) {
if (this.list.length < 4) {
return this.list
}
let newArr = []
for (var i = 0; i < 3; i++) {
let item = this.list[i]
newArr.push(item)
}
return newArr
}
return this.list
},
set: function (val) {
this.showList= val
}
}
}