Javascript assign object value to another object value

Question

In javascript, let say there are 2 objects, objectA and objectB.

I want to change objectA's value to objectB's value, if objectB has objectA's key and value.

How can I approach this problem?

let objectA = {
    "key1" : {
        "key1_1" : "a",
        "key1_2" : "b"
    },
    "key2" : {
        "key2_1" : 1,
        "key2_2" : 2,
        "key2_3" : 3
    },
};
let objectB = {
    "key1" : {
        "key1_1" : "assign_a"
    },
    "key2" : {
        "key2_2" : 5,
        "key2_3" : 6
    },
};

let i_want_this_result_assignedObjectA = {
    "key1" : {
        "key1_1" : "assign_a",
        "key1_2" : "b"
    },
    "key2" : {
        "key2_1" : 1,
        "key2_2" : 5,
        "key2_3" : 6
    },
};

I failed but my approach is using recursive function. 1. list all keys by Object.keys 2. check each key's value is object or not 3. if object -> call recursive function 4. if not object -> assign like this but I couldn't approach to object in object in object ... value by key list. — Hanvit Choi, Apr 17 '20 at 03:47
Immutablejs has some mergeDeep function that might do what you're looking for. https://immutable-js.github.io/immutable-js/docs/#/mergeDeep — Matt, Apr 17 '20 at 03:47
Check this one : https://stackoverflow.com/a/8625261/7026966 — Himanshu Shekhar, Apr 17 '20 at 03:51

score 0 · Answer 1 · answered Apr 17 '20 at 04:09

0

Thanks for comments,

In my case, Markus's answer at stackoverflow.com/a/8625261/7026966 is the answer what I'm looking for.

answered Apr 17 '20 at 04:09

Hanvit Choi

11
3

Javascript assign object value to another object value

1 Answers1