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


Functional Calculator Provides all the basic functions, including finding the square root. A small but powerful script.


Check Sorter 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.


Category: Calculation

Add Commas Modifies a number by adding commas after every third digit. For example, 123456789 is converted to 123,456,789. The script example shows this JavaScript as used on numbers of various sizes. And, it demonstrates a clever use of the modulus operator.


Category: Calculation

Bi-Directional Resistance Calc Calculates resistance from colors and colors from resistance, each with image-based output. Both color and numeric interfaces function as input and output.


Category: Calculation

Gasoline Usage Calculator Trying to keep track of gasoline expenses? This JavaScript calculates how many miles you are getting per gallon - per day and per year. It also calculates the amount spent per year and how much CO2 your car is producing.


Category: Calculation

Prime Number Tester Calculate whether or not a number is prime and break it into its prime factors. Also includes a loading bar for large numbers.


Category: Calculation, Math

Length Converter Convert units from one to another. Simply choose the unit you want to use, type the value in the field next to it, and click the 'Convert' button.


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


Category: Calculation, Math

Simple Fix Length for Decimal Places This JavaScript enables you to set a fixed number of decimal places for an input number. It also provides error checking.


Category: Calculation, Math

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