Today we're going to build a simple React / Web3 Dapp that replicates a small portion of the Uniswap v2 interface - specifically, we are building the "account login" button that allows users to connect to a Dapp using their MetaMask extension.
By the end of the tutorial you will have a working React app that will be able to connect to your MetaMask account, and read your address ETH balance. If you connect with multiple accounts the interface will change to reflect the active account.
We will be replicating (fairly closely) the look, feel, and functionality of the following "Connect to a wallet" section of the Uniswap v2 interface:
Before we get started:
You'll need MetaMask login installed to get this working. If you don't already have it, start by downloading installing the MetaMask extension for Chrome, Firefox, Brave, or Edge: https://metamask.io/download.html (be careful to triple check the URL and ensure you are downloading from a trusted website). If you haven't set up MetaMask Login before, follow the instructions to set up an Ethereum account.
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