Lodash _.flatMap() Method

Lodash _.flatMap() method creates a flattened array of values by running each element in the collection through iterate and flattening the mapped results.

Syntax:

_.flatMap(collection, iteratee);

Parameters:

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

Return Value: This method returns the new flattened array.

Example 1: In this example, we are passing a duplicate function to the lodash _.flatMap() method and an array and getting the result in the console.

Output:

[
 35, 35, 47, 47, 58, 58, 
 69, 69, 94, 94, 13, 13,
 72, 72
]

Example 2: In this example, we are passing a duplicate function to the lodash _.flatMap() method and an array and getting the result in the console.

Output:

[
 3.5, 3.5, 4.7, 4.7, 5.8, 5.8, 
 6.9, 6.9, 9.4, 9.4, 1.3, 1.3,
 7.2, 7.2
]
[
 3, 3, 4, 4, 5, 5,
 9, 9, 9, 9, 1, 1,
 7, 7
]

Note: This code will not work in normal JavaScript because it requires the library lodash to be installed.