P5.js code for creating a calculator tip app confused

p5.js Coding Questions
37

I don’t know if you figure this out, but the problem is that value returns a string, not a number. At this line,

total = tip + bill.value()

becomes

total = 2 + "10"

which results in “210” not 12. This is just a weird thing about javascript. You can fix it by converting the value to number, for example,

total = tip + int(bill.value())

or

total = tip + parseInt(bill.value())

And I couldn’t understand what you mean by “nothing shows” :slight_smile: What do you expect to show up?