<div class="condition" :style="{background: item.collectColor}" v-for="(item,index) in myCollectList" :key="item.id"
@click="selectMyCollectList(item,index)">
<span>{{item.collectTitleName}}</span><i class="el-icon-check" v-show="item.selected"></i>
</div>
selectMyCollectList(item,index) {
item.selected = !item.selected;
}
set it to responsive data first
for (let i = 0; i < _this.myCollectList.length; iPP) {
_this.$set(_this.myCollectList[i], 'selected', false)
}
the data can be changed at this time, and the view will change
selectMyCollectList(item,index) {
item.selected = !item.selected;
}
this.$set this.$set(item, 'selected', !item.selected):key="index"key is the
of the index in the array bound to your loop. selectMyCollectList(item,index) {
item.selected = !item.selected;
}there is no problem with this method, you can try to print to the page to see the data changes, there should be a problem elsewhere.
<span>{{item.selected}}</span><i class="el-icon-check" v-show="item.selected"></i>Click to change the data, and you have to change the data in data. This method is changed as follows:
selectMyCollectList(item,index) {
this.myCollectList[index]['selected']=!this.myCollectList[index]['selected'];
}is the subject of the old version of vue? I also encountered this problem in my recent interview, but my page data is updated in real time, and I don't know why I ran through my project with the subject's code.
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