Question

how is a function invoked?

Answer 1

Invoking a JavaScript Function. The code inside a function is not executed when the function is defined. The code inside a function is executed when the function is invoked. ... In this tutorial, we will use invoke, because a JavaScript function can be invoked without being called.

Answer 2

Answer:

here is our answer

Explanation:

A user defined function is a complete and independent program which can be used or invoked by the main program or by the other sub programs...

hope it's helpful.....