计算属性设置参数

<tr v-for="(item,index) in arr" v-if="myfilter(index)">
    <td>{{item.username}}</td>
    <td>{{item.sex}}</td>
    <td>{{item.grade}}</td>
    <td>
        <a href="#" @click="delClick(index)">删除</a>
    </td>
</tr>
export default {
    name: 'Achievement',
    data () {
        return {
            ...
        }
    },
    methods: {
        ...
    },
    computed: {
        myfilter() {
            return function(index){
                return this.arr[index].username.match(this.name)!==null;         
            }           
        } 
    }
}