Ethers.js by Example

Learn how to use ethers.js from these examples

Technology Stack & Tools

• Javascript (Writing scripts)
• Ethers.js (Blockchain Interaction)
• Node.js (To run our scripts and install ethers.js)
• Infura (Node provider)

Setting Up

1. Clone/Download the Repository

2. Install Dependencies:

$ npm install

Ethers.js scripts

1_accounts.js - Reads balance of ether of wallet address

• Input your infura project ID

$ node examples/1_accounts.js

2_read_smart_contract.js - Reads the balance of Dai wallet address from the Dai contract

• Input your infura project ID

$ node examples/2_read_smart_contract.js

3_send_signed_transaction.js - Transfers 0.025 ether from account1 to account2

• Input your infura project ID
• Input your account1 public key
• Input your account2 public key
• Input your account1 private key

$ node examples/3_send_signed_transaction.js

4_deploy_contract.js - Deploys contract on Kovan testnet by using Factory contract

• Input your infura project ID
• Input your account private key

$ node examples/4_deploy_contract.js

5_write_contract.js - Transfers entire balance of token of your choosing from account1 to account2 (on Kovan testnet)

• Input your infura project ID
• Input your account1 public key
• Input your account2 public key
• Input your account1 private key
• Input contract address of the token you want to transfer (You can use the deployed contract address from the previous script)

$ node examples/5_write_contract.js

6_contract_event_stream.js - Queries a block for transfer events

• Input your infura project ID

$ node examples/6_contract_event_stream.js

7_inspecting_blocks.js - Get transactions from block

• Input your infura project ID

$ node examples/7_inspecting_blocks.js