Web3 Practice

Step #1:
Read an account's ether balance on Ethereum Mainnet

Step #2:
Read data from the ERC20 UNI token contract deployed on Ethereum Mainnet

Step #3:
Transfer 0.1 ETH from one account to another on Ropsten Testnet

Step #4:
Deployed a simple contract, on Ropsten Testnet, that has a uint256 state variable and the following four functions:

• setNumber to set a specific value in the variable
• increment will increase the value of the variable by 1
• decrement will decrease the value by 1
• getNumber returns the current value

Address of the deployed contract is 0x5Bdc2d267058F861a609da09fB81a075395B520C

Step #5:
Calling functions of the smart contract deployed in previous step

Step #6:
Read events from the ERC20 UNI token contract deployed on Ethereum Mainnet

Step #7:
To inspect the content within a block, the following three functions are implemented:

• getLatestBlockNumber to display number of the latest block
• getLatestBlock displays content of the latest block
• getLastBlocks shows the block number and hash of the latest x blocks (where x is a number provided as a parameter to the function)

Step #8:
The following Web3 Utilities had been explored:

• getAverageGasPrice gets the average gas price currently for the network
• generateHash displays sha3 and keccak256 hashes of the provided string
• generateRandomHex generates a random hexadecimal number of the provided bytes
• useUnderscoreJsLibrary uses the contains function of the Underscore.js library

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This tutorial is being used as reference for this exercise.