The front-end of a decentralized application (DApp) can interact with smart contracts on the blockchain by utilizing Web3.js, which is a JavaScript library that allows for communication with the Ethereum blockchain. Through Web3.js, the front-end can connect to a node on the blockchain network, such as MetaMask or a local node, in order to send transactions to and read data from smart contracts. By using functions provided by Web3.js, developers can enable users to interact with smart contracts directly from the DApp's user interface.
