I need a JavaScript code for this

Question

https://code.sololearn.com/WLi18gc4iMmD/?ref=app

Answer 1

Okay thank you so much for helping me out 🙏✌️

Answer 2

Umar,
Please put Javascript in tags rather than just 'all' ☝

Answer 3

Hey there Umar Ibrahim Muhammed ,
The checkbox doesn't work because you don't have declared a function with that name :)

Just in javaScript section or in a script tag create this function:
function billingFunction(){
//your code goes here :)
...
}

Answer 4

Okay I did that.. you can help me now.

Answer 5

Now just use a function that check if the checkbox is checked...
An example:

https://code.sololearn.com/WgzC39ePoAH5/?ref=app

Btw just show effort too, the community can't post directly answers or solutions. :)