Underscore.js _.defaults() Function

Underscore.js_.defaults() function returns the object after filling in its undefined properties with the first value present in the following list of default objects.

Syntax:

_.defaults(object, *defaults);

Parameters:

• object: This parameter holds the value of an object.
• defaults: It is an optional parameter. It contains the [key, value] pair of an object.

Return Value:

It returns the object after filling in its undefined properties with the first value present in the following list of default objects.

Example 1: The below code example implements the _.defaults() function in underscore.js.

Output:

Example 2: This is another implementation of the _.defaults() function.

Output: