Electrical Calculator

The resistor color coder is a JavaScript code that is used to determine the resistance value of a resistor based on its colored bands. It uses a function called calcResistance that takes the input of the resistor band colors, which is selected from a drop-down menu in the HTML form. The function then calculates the resistance value by concatenating the two first band colors and adding zeros based on the third band color. The resistance value is then formatted with commas as thousands separators and the tolerance value is added based on the fourth band color. The function updates the pull-down menu background and foreground colors and displays the resistance value in an HTML element with an id of "resistorValue". The addCommas function is used to format the resistance value with commas.

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(Android APK file)