Why do I need JavaScript when I have Excel?

With Excel, it is easy to design a useful web calculator, but you cannot put the calculator on one of your web pages, not even with the web version of Excel. SpreadsheetConverter uses your Excel file to create a portable, self-contained JavaScript spreadsheet that is easy to insert into any blog or website.

Where can I find a good reference card for JavaScript?

Look at

from Visibone, which has a lot of nice printed reference cards.

Build live website calculators and web forms now!

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Just download, install and test the Excel add-on now. Or let us convert a spreadsheet for you, for free.