Map over object preserving keys

Question

The map function in underscore.js, if called with a javascript object, returns an array of values mapped from the object\'s values.

_.map({one:          


        

Answer 1

I managed to find the required function in lodash, a utility library similar to underscore.

http://lodash.com/docs#mapValues

_.mapValues(object, [callback=identity], [thisArg])

Creates an object with the same keys as object and values generated by running each own enumerable property of object through the callback. The callback is bound to thisArg and invoked with three arguments; (value, key, object).