RPN Virtual Calculator

A browser-friendly RPN calculator built around a small, generic JavaScript API.

Goal

This project defines a reusable RPN calculator engine with:

• a simple stack-based public API
• configurable numeric and UI behavior
• centralized command metadata
• a browser demo that uses the same public API as any consumer code

Package contents

• rpn-calculator.js: calculator engine
• rpn-example.html: example browser interface

Main features

• Single JavaScript class
• Configurable stack size (maxSize, default: 2048)
• Configurable numeric base (base, default: 10)
• Configurable angle mode (angleMode, default: deg)
• Optional command filtering through enabledCommands
• Generic public API centered on:
  • push
  • pop
• clear
  • swap(index1, index2)
  • remove(index)
  • edit(index)
  • isValidIndex(index)
  • input(command)
  • command(name, ...args)
• inputValue is kept as a string to preserve future input formats
• isEditing is exposed as a boolean state
• All supported commands are described in one centralized dictionary
• Supported categories are limited to:
  • Stack
  • Arithmetic
  • Trigonometry

Basic usage

In a browser