Excellent. I'm trying to learn html this has helped me a lot. Many thanks

Here is how I would approach your calculator problem:

1) find a reference solution in HTML (google will help you find example calculator code)
e.g., http://www.daniweb.com/code/snippet216407.html

2) use MobiOne Design Center to paint a calculator UI.
2a) Use custom button components for the numbers and functions. Create an initial button for the numbers and the copy/paste it 8 more times and change it's text for the appropriate number, 0-9
2b) Include an input field component for presenting the current value

3) run the design in the Test Center iPhone emulator to confirm the UI appears the way you want it to

4) you'll have to write javascript for the button actions
See #1 above for example code and inspiration :)
You can use the Test Center to view and edit the HTML, JS, or CSS files that make up your calculator webapp.

Note, MobiOne does not yet protect customizations of the generated code from a design. Therefore be extra careful not to overwrite your custom js in #3. Currently I put my custom css and js in completely separate files.

Good luck.

Very Helpful Thank u.....

HTML needs a script to do any math or display any numbers from a data source. Used alone, HTML can't do anything but control how a web page is displayed.

not run plz help

I also make calculator in java script. When i developed my calculator in javascript I had to write many function. Your code is very simple and no need to use javascript. I also checked it on browser, worked well.