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Blockchain Smart Contracts with Solidity · Lesson

Interacting with Deployed Contracts

Discover how to interact with your deployed smart contracts using JavaScript tests and console commands.

Why Interact with Contracts?

After deploying your smart contract, the real fun begins: interacting with it! This means calling its functions, reading its data, and sending transactions.

Interacting is crucial for:

  • Testing: Ensuring your contract behaves as expected.
  • dApp Frontends: Letting users connect and use your contract.
  • Automation: Building scripts that perform actions on the blockchain.

Your Interaction Toolkit

When working with Hardhat or Truffle, you have powerful tools to interact with deployed contracts:

  • Hardhat Console / Truffle Console: An interactive command line environment for quick tests and debugging.
  • JavaScript Tests: Automated scripts that deploy (or connect to) contracts and verify their behavior.
  • Custom Scripts: Standalone JavaScript files for more complex, repeatable interactions.

We'll focus on the console and JS tests today.

All lessons in this course

  1. Setting Up Hardhat or Truffle
  2. Compiling and Deploying Contracts
  3. Interacting with Deployed Contracts
  4. Writing and Running Contract Tests
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