This tutorial demonstrates how to build a dApp with Algorand and the JavaScript Algorand SDK. It is a simple counter dApp that allows users to set, increment, decrement and query the value of a counter. The high level technical details are:

• The environment: Algorand sandbox (a sandbox is a simulated network of nodes that can be used for testing and development purposes).
• Smart contract: written in Python.
• Frontend: written in React Hooks + JS AlgoSDK.

By the end of this tutorial, you will be able to:

• Setup a development environment using Algorand sandbox
• Deploy a smart contract
• Create a React frontend to interact with the smart contract