[removed] Object Rename Key

Question

Is there a clever (i.e. optimized) way to rename a key in a javascript object?

A non-optimized way would be:

o[ new_key ] = o[ old_key ];
delete o[ o         


        

Answer 1

Yet another way with the most powerful REDUCE method.

data = {key1: "value1", key2: "value2", key3: "value3"}; 

keyMap = {key1: "firstkey", key2: "secondkey", key3: "thirdkey"};

mappedData = Object.keys(keyMap).reduce((obj,k) => Object.assign(obj, { [keyMap[k]]: data[k] }),{});

console.log(mappedData);