Use JavaScript to find out if a number entered is odd or even and the factors of that number.

Displays the Fibonacci Sequence of Numbers as entered by the user. Warning: This is very processor intensive, do not enter a large number.

A calculator code with memory screen, built-in help screens, and new window function.

Use this JavaScript to calculate your BMI (Body Mass Index). Measurements are computed using the metric system. A perfect addition for a health Web site.

A function to sum input boxes and display in text rounded to two places with dollar sign. It also sends result with submit and has a reset.

This calculator code can quickly determine the Greatest Common Factor and Least Common Multiplier between two or three numbers.

JavaScript can sort data based on any field of information. In this example, a checkbook register can be sorted by date, check number, check amount, or paid to person. We're one step closer to online banking.

An interesting script for converting between integers and Roman Numerals, as well as checking the validity of Roman Numerals for common mistakes.

It's a calculator that floats on the page. Drag it around and use it the same way you would the normal Windows calculator. Nice looking too.

This JavaScript will validate an ABA routing number according to a given algorithm. (Although the number may be valid, it may not be actually assigned to a financial institution.)