let arr=[{name:1,img:'../../1.png'},{name:2,img:'../../2.png'}]
let arr3=[]
let arr1=[{name:1,age:2},{name:2,age:3},{name:2,age:3}]
let arr2=[{name:1,sex:'man'},{name:2,sex:'girl'}]
//目标实现 arr1=[{name:1,age:2,sex:'man'},{name:2,age:3,sex:'girl'}},{name:2,age:3}]