Comments on: How to create your own customized calculator via JavaScript

By: Knix

Knix — Thu, 20 Nov 2008 05:47:38 +0000

Hi,

Please have a look at my post on JavaScript prompts. You can use the same exact idea and just use eval on the string that the user has entered into the prompt. The only thing here is that you would have to do input verification and make sure the user has only entered the allowed characters in constructing the string.

By: Guest

Guest — Thu, 13 Nov 2008 14:18:32 +0000

how would i make a calculator using javascript prompts??

By: Knix

Knix — Tue, 28 Oct 2008 22:50:56 +0000

Hi May,

I’m doing well. Thanks =)

By: may

may — Sat, 25 Oct 2008 00:55:59 +0000

hi knix how are you

By: Knix

Knix — Fri, 24 Oct 2008 04:00:15 +0000

This is possible but it would take a little tweaking of the code. Basically, you would need to alter the equation before submitting it to eval. For example, let’s say “%” will represent your percent function.

If equation = 2%4

Alter the equation such that = 2/4*100

Then execute the eval function with this string

That should do it.

By: laura Word

laura Word — Fri, 17 Oct 2008 20:06:30 +0000

This is exactly what I have been looking for! with one exception. :)

I have added a few other buttons to show a word and represent a specific corresponding number so I get how to modify the code but I can’t seem to figure out how to add one that calculates the percentage that one number represents of another.

Can you help?

By: Knix

Knix — Thu, 25 Sep 2008 01:10:21 +0000

Hi Paul,

Can you please post your code so that I can what you are referring to?

By: Paul

Paul — Wed, 24 Sep 2008 15:35:20 +0000

Thanks for the JavaScript calculator. I was high-centered on the eval function ie. how to make it work on the input string.
My calculator was set up similar to yours except mine didn’t work! Much appreciated.