let arra = {
"aaa":"",
"bbb":"",
"ccc":""
}
let arrb = {
"aaa":"111",
"bbb":"222",
"ccc":"333",
"ddd":"444",
"eee":"555"
}
listAssign(arra,arrb)after executing listAssign, arra becomes
arra = {
"aaa":"111",
"bbb":"222",
"ccc":"333"
} that is, using B object to assign a value to An object
I would like to ask: how should this listAssign be implemented?
const listAssign = (arrA, arrB) => Object.keys(arrA).forEach(key => { arrA[key] = arrB[key] || arrA[key]});function listAssign(arra, arrb){
let b = {}
for(let item in arrb) {
console.log(item)
if (Object.keys(arra).includes(item)) {
b[item] = arrb[item]
}
}
return b
} Object.assign (a, b)
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