SOURCE

new Vue({
    el: '#app',
    data() {
        return {
            arr: [{
                id: '1',
                value: 1
            },{
                id: 2,
                value: 2
            },{
                id: 3,
                value: 3
            }]
        }
    },
    methods:{
        deleteData() {
            this.arr.splice(1,1)
        }
    }
})

<div id="app">
    <div v-for="(item) in arr" :key="item.id">
        {{item.value}}
        <input/>
    </div>

    <button @click="deleteData">删除第二个元素</button>
</div>