Lodash _.map() Method

Lodash _.map() method creates an array of values by running each element in the collection through the 'iteratee'. Many methods are guarded to work as iteratees for methods like _.every(), _.filter(), _.map(), _.mapValues(), _.reject(), and _.some() methods.

Syntax:

_.map(collection, iteratee)

Parameters:

• collection: This parameter holds the collection to iterate over.
• iteratee: This parameter holds the function invoked per iteration.

Return Value:

This method returns the new mapped array.

Example 1: In this example, we have used the _.map() method on an array and do iteration while using function square.

Output:

[ 25, 324 ]

Example 2: In this example, we have used the _.map() method on an object and doing iteration while using function square.

Output:

[ 196, 784 ]