Lodash _.mapKeys() Method

Lodash _.mapKeys() method is used to create an object with the same values as the object and the keys created by running each of the object's own enumerable string keys.

Syntax:

_.mapKeys(object, iteratee);

Parameters:

• object: This parameter holds the object to iterate over.
• iteratee: It is the function that is invoked per iteration.

Return Value:

This method returns the new mapped object.

Example 1: In this example, we are adding the key and value by the use of the function that is passing into the lodash _.mapKeys() method and print the result in the console.

Output:

{'cpp15': 15, 'java40': 40, 'python63': 63}

Example 2: In this example, we are returning the age by the use of the function that is passing into the lodash _.mapKeys() method and print the result in the console.

Output:

{21: {'age': 21, 'user': "priya"}, 23: {'age': 23, 'user': "amit"}}