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fix(docs): contract-tutorial-hardhat-node #7076

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Jun 5, 2024
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fix(docs): contract-tutorial-hardhat-node #7076

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4cf44e1
Contract Tutorial Fixes
May 30, 2024
b8148e7
Hardhat node can use default automine behavior
Jun 3, 2024
a6fe2d9
Merge branch '4.x' into fix/docs/contracts-tutorial-hardhat-node
Jun 3, 2024
e3c00a0
Remove private keys
Jun 4, 2024
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Hardhat node can use default automine behavior
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Dan Forbes committed Jun 3, 2024
commit b8148e70ff43db018af29f290fb1b6a66d11f8c0
24 changes: 8 additions & 16 deletions docs/docs/guides/smart_contracts/smart_contracts_guide.md
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Expand Up @@ -175,23 +175,15 @@ npx hardhat init

Initializing the Hardhat project will require responding to several prompts - select the default option for each prompt.

After you initialize the Hardhat project, a number of new files and directories will be created, including a Hardhat configuration file called `hardhat.config.js`. Edit `hardhat.config.js` to include the [Web3.js plugin for Hardhat](https://hardhat.org/hardhat-runner/plugins/nomicfoundation-hardhat-web3-v4) and to configure the Hardhat development network's [mining mode](https://hardhat.org/hardhat-network/docs/reference#mining-modes) to produce blocks every 5 seconds.
After you initialize the Hardhat project, a number of new files and directories will be created, including a Hardhat configuration file called `hardhat.config.js`. Edit `hardhat.config.js` to include the [Web3.js plugin for Hardhat](https://hardhat.org/hardhat-runner/plugins/nomicfoundation-hardhat-web3-v4).

```js
require("@nomicfoundation/hardhat-toolbox");
require("@nomicfoundation/hardhat-web3-v4"); // <=== add this import

/** @type import('hardhat/config').HardhatUserConfig */
module.exports = {
solidity: "0.8.24",,
networks: { // <=== add this property
hardhat: {
mining: {
auto: false,
interval: 5000,
}
}
}
solidity: "0.8.24",
};
```

Expand Down Expand Up @@ -233,18 +225,18 @@ const { Web3 } = require("hardhat");

const web3 = new Web3("http://127.0.0.1:8545/");

// Log the current block number to the console
// Log the chain ID to the console
web3.eth
.getBlockNumber()
.getChainId()
.then((result) => {
console.log("Current block number: " + result);
console.log("Chain ID: " + result);
})
.catch((error) => {
console.error(error);
});
```

This code sets up a Web3.js connection to the Hardhat development network and logs the current block number to the console.
This code sets up a Web3.js connection to the Hardhat development network and logs the chain ID to the console.

:::note
This tutorial uses the default URL for the Hardhat development network (http://127.0.0.1:8545/). Make sure to use the actual URL that was provided when the Hardhat development network was started.
Expand All @@ -256,10 +248,10 @@ Run the following command to test the connection:
node index.js
```

If everything is working correctly, you should see the current block number logged to the console (the block number will be different depending on how long the Hardhat development network has been running):
If everything is working correctly, you should see the chain ID logged to the console:

```bash
Current block number: 42
Chain ID: 31337
```

## Step 6: Deploy the Smart Contract with Web3.js
Expand Down