2 JavaScript Calculators
This collection is a complete guide to building calculators with JavaScript, from simple to secure and professional. Both the fast but insecure eval() method and the advanced, robust approach using the Shunting-yard algorithm are covered. Special attention is paid to state management (current number, operation) and UX details like handling keyboard input and dynamic font sizing. This is your toolkit for creating any type of calculator, from basic to scientific.
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Calculator
A responsive calculator interface with distinct functional zones powered by CSS Grid and immediate string evaluation.
Compound Interest Calculator for Trading
A fully functional compound growth calculator implemented in pure JavaScript for managing financial goals. The demo features localStorage for saving user inputs and a core while loop that iteratively calculates daily gains and projected goal dates.
