How to add our own functions to the JS link

In the codes where we operate LED and Buzzer with the help of cloud, we used the file
which contained pre-defined functions. What should i do to add my own functions in this file?

Hello vishal,
The functions which we used in controlling LED and Buzzer are built-in functions in Javascript.
As in many programming languages,we use built-in functions.
So,in order to write your own functions then please do know about the built-in functions
‘how they are built?’ , which helps you to write on your own.
Hope you understood…!!
here is a reference for you: Arduino/hardware/RBL/RBL_nRF52832/cores/RBL_nRF52832/wiring_analog.c