When i am calling function in console why it is showing error and how callback function is working please tell

#1

HTML Code
https://drive.google.com/file/d/1iQnyw0F3LSlMh7Iz3j3STqwSIwJT60-U/view?usp=sharing

JS code
https://drive.google.com/file/d/1C96ThFjNtILQlD6BhEf_vkmrnQ5UnW40/view?usp=sharing

#2

Hi,
i observed ur code, u r trying to call the parameters of ur function and inorder to call any function u need to make the function first and you are just trying to call the paramters which are not the functions.

kindly rewrite your code via proper implementation of concept and happy coding.

#3

no i am not calling parameters if code is incorrect then why it is running at first and when i am calling function second time it is not showing (none and some) in browser instead showing error

#4

hey,
line 1: “dosome(one)” here one is parameter.
line 3 & 7: ur are calling function one() and e() but there are not defined

rewrite your code with proper implementation

#5

Actually i am trying to use one() and e() as a callback if code is wrong what will be the code

#6

Actually i am trying to use one() and e() as a callback if code is wrong what will be the code ??
please send me the code on coding block IDE

#7

I hope I’ve cleared your doubt. I ask you to please rate your experience here
Your feedback is very important. It helps us improve our platform and hence provide you
the learning experience you deserve.

On the off chance, you still have some questions or not find the answers satisfactory, you may reopen
the doubt.