Stack Visualizer

See Last In, First Out behavior one operation at a time.

A small React application for students learning stacks and developers practicing state-driven interfaces.

What it demonstrates

• Push a typed value onto the stack.
• Pop the most recently added value.
• Highlight the top item and distinguish values with colors.
• Show feedback for successful actions, empty input, and an empty stack.
• Press Enter to push the current value.

Preview

Run locally

With Node.js/npm installed, open the source directory:

npm install
npm start

Open localhost:3000. Use npm run build to generate the static build.

Try it

Push A, then B, then C. Click Pop: C is removed first. Continue popping to reach the empty-stack message.

How it works

src/App.js stores the stack, input, and feedback in React state. Push appends to a copied array; pop removes its last element; the rendered stack follows that state. src/App.css provides the visualization styling, and src/index.js mounts the application.

This is an in-memory teaching tool. Reloading the page resets the stack; there is no backend or persisted history.

Contributing

Issues and pull requests are welcome. Describe the stack behavior you are changing and include an example showing the expected sequence of operations.