new Vue({
el: "#app",
data: {
arr: [{
name: 'ceshi'
},
{
name: 'test'
},
{
name: 'qwert'
}],
comparisonArr: []
},
methods: {
selItem(item) {
this.comparisonArr.push(item)
}
}
})
<script src="https://unpkg.com/vue">
</script>
<div id="app">
<div>
<h1>
展示的数据
</h1>
<ul>
<li v-for='item in arr'>
{{item.name}}
<button @click='selItem(item)'>
添加进去比较
</button>
</li>
</ul>
</div>
<div>
<h1>
比较的数据
</h1>
<ul>
<li v-for='item in comparisonArr'>
{{item.name}}
</li>
</ul>
</div>
</div>