Can anyone someone help me why MULTIPLICATION and DIVISION button isn't working?

Question

I've made my own calculator. Two buttons are working but the other aren't. Maybe only 2 buttons can be use in HTML?

https://code.sololearn.com/WWa0NMXKlIM5/?ref=app

Answer 1

You mistyped the HTML on these buttons.
(note the onclcik)

Answer 2

@Tiyam ah I see. Thanks for the info. I'm still learning JS 😂

Answer 3

wow thanks a lot @Tiyam Foyraz
HAHAHA lol I'm also looking for solution about that. Thank you! but what does parseInt() means?
And also why in the other Operation it is okay withouth parseInt() i mean like in the Division, Multiplication, Subtraction they are working fine.

Answer 4

@StoffelJs i've already tried it. even if it has semicolon or not. it is still working. the thing I'm in trouble is the multiplication and division button isn't working.

Answer 5

@Igoor Silver thank you buddy! I never saw the "onclik" I mistyped it.

Answer 6

By the way thank you guys for the help.

Answer 7

@rookie have you checked doing addition on your code..I just modified your code and fixed a bug!!
adding two numbers in your code results in string concatenation..example:- adding 10 with 10,results in 1010..
to avoid javascript string concatenation,use the code I used in the addSum() function.
what happened?--In your addsum() function, I entered your prompt inputs inside a parseInt() function,which converts your prompt inputs from string to integer.Now,if you add them,it will result in a numerical addition rather than a string concatenation.

https://code.sololearn.com/W4Z80qsOGrcj/?ref=app

Answer 8

Answering your 1st part -
parseInt() is basically a javascript built-in function that is used to parse your strings into integer value..
to learn more,check this link-
https://www.w3schools.com/jsref/jsref_parseint.asp

Your second part -
JavaScript string concatenation happens only when you use + sign..
so,when you use minus(-),division(/),or multiplication(*),the browser considers your input strings as numerical values and completes the operation.
NOTE- if your input was a string,like "I am rookie",and you use "I am rookie"*5,then the result would have been NaN(not a number)...Thats how javascript works.!

Answer 9

@rookie great!!.just keep learning.. don't stop.

Answer 10

You dont need a ; in Html
its not

onclick="subNumb();"

it should be

onclick="subNum()"