数组转数组对象及数组对象中的某个属性值拼成一个数组

//数组转数组对象
let a = [1,2,3,4,5,66]
let imgArray = [];
a.forEach((item,index)=>{
    imgArray.push({
      picUrl:item
    })
})
console.log(imgArray)

数组对象中的某个属性值拼接成数组

let arrs = 
[{name: "title", value: "名称1"},
{name: "startTime", value: "17:00:16"},
{name: "endTime", value: "19:01:18"},
{name: "title", value: "名称2"},
{name: "startTime", value: "20:03:18"},
{name: "endTime", value: "21:04:20"}
] 
let idsStr = arrs.map(function(obj,index){
   return obj.name;
}).join(","); 
let qs = idsStr.split(',')
console.log(qs)

或者

 

let arrs =
[{name: "title", value: "名称1"},
{name: "startTime", value: "17:00:16"},
{name: "endTime", value: "19:01:18"},
{name: "title", value: "名称2"},
{name: "startTime", value: "20:03:18"},
{name: "endTime", value: "21:04:20"}
]

方法1：
const b = []
arrs.forEach((item,index)=>{
console.log(item.name)
b.push(item.name)
})

方法2：

const b = arrs.map((item,index)=>{return item.name})

console.log(b)