请各位大佬指点！如何给数组添加一项值感激不尽

Question

letarr=[{a:1,b:2,....,y:3},{a:2,b:2,....,y:3},{a:4,b:2,....,y:3},];letval=[1,2,....,2]arr里面的记录拥有非常多的key-value这样的键值对。val是新的一组值。如何在arr里新增一条记录，key值同arr的记录，value是val数组的值？

Answer 1

letarr=[
{a:1,b:2,y:3},
{a:2,b:2,y:3},
{a:4,b:2,y:3},
];
letval=[1,2,3];
letcharCode=97;
constobj={a:val[0]};
constres=val.reduce((pre,el)=>{
charCode++;
constkey=String.fromCharCode(charCode);
obj[key]=el;
returnobj;
});
arr.push(res);
console.log(arr);
                            

Answer 2

letarr=[
{a:1,b:2,c:3,y:4},
{a:2,b:3,c:4,y:5},
]
letval=[3,4,5,6];
letkeys=Object.keys(arr[0]);
letnewValue={};
keys.forEach((key,index)=>{
newValue[key]=val[index];
})
arr.push(newValue)
console.log(arr)