在数组对象中添加对象属性

方法一：

let list = [{id:'1'},{id:'2'}]
let kvlist = []//用来存放组装后新的数组对象
let one = {}//添加的对象
for(var i in list) {
  one = list[i]
  one['flag'] = false
  kvlist.push(one)
  // console.log(one)
}
console.log(kvlist)
//{[id:'1',flag:false],[id:'2',flag:false]}

方法二：

let arr = [{name:'a'}, {name:'b'}]
let arrAfter = []////用来存放组装后新的数组对象
arr.forEach(item => {
  item.flag = false
  arrAfter.push(item)
})
console.log(arrAfter);
//{[name:'1',flag:false],[name:'2',flag:false]}

拓展：

改变数组中的key，value：

let kvlist = []
let one = {}
for(var i in list) {
one = list[i]
one['key'] = list[i].id
one['value'] = list[i].name
kvlist.push(one)
// console.log(one)
}
console.log(kvlist)
_this.bnlist = kvlist