The join() method is used to join the collection elements with given string and returns the collection elements.
Parameters: The collect() method takes one argument that is converted into the collection and then join() method is applied on it.
Return Value: This method joins the collection elements with given string and returns the values.
Below example illustrate the join() method in collect.js:
10, 20, 30, 40, 50 a, b, c and d
Geeks, GFG, GeeksforGeeks