vue中数组数据处理

Question

有两个数组，如下
`
arr1=[

{num:'001',name:'酒店'},
{num:'002',name:'饭馆'}

]
arr2=[

{isAlive:'0',num:'001',id:'aaa'},
{isAlive:'1',num:'001',id:'bbb'},
{isAlive:'1',num:'002',id:'ccc'}

]
`
想得到的目标数组
`
arr=[

{num:'001',name:'酒店',isAlive:'0',id:'aaa'},
{num:'002',name:'饭馆'}

]
`
arr1是地点数组，arr2是设备数组，都是data中的变量，一个地点可以有多个设备，只要有一个设备离线(isAlive:'0')，那么就将该设备的状态及id放到目标数组中，否则只取num和name

Answer 1

const arr1=[
    {num:'001',name:'酒店'},
    {num:'002',name:'饭馆'}
];
const arr2=[
    {isAlive:'0',num:'001',id:'aaa'},
    {isAlive:'1',num:'001',id:'bbb'},
    {isAlive:'1',num:'002',id:'ccc'}
];

console.log(arr1.map(v=>{
    var index = arr2.findIndex(e => (e.num === v.num && e.isAlive === '0'));
    if (index !== -1){
        v.isAlive = arr2[index].isAlive;
        v.id = arr2[index].id;
    }
    return v;
}))