Updating existing object values using best way [duplicate]

Question

I want to update my object values with some predefined value like 5.

Here is my object,

let data = {"a":1,"b":2,"c":3,"d":5}

Expected Output;

let data = {"a":5,"b":10,"c":15,"d":25}

Here is my attempt:

Object.keys(data).map(key => data[key] *= 5 )

Answer 1

Just loop through all the new object's key and update it to existing object.

var obj = {"a":1,"b":2,"c":3,"d":5,"f":9,"g":11,"h":21}

var newObj = {"a":5,"b":10,"d":20,"h":25}

let keys = Object.keys(newObj)

keys.map(x=>{
  obj[x] =  newObj[x]
})

console.log(obj)

Answer 2

Multiply that values with 5:

let data = {"a":1,"b":2,"c":3,"d":5};
Object.keys(data).forEach(key => data[key] *= 5);
console.log(data);

Using Object.Entries()

let data = {"a":1,"b":2,"c":3,"d":5};
Object.entries(data).forEach(([key, val]) => data[key] = val*5);
console.log(data);