$rpcUrl— global variable containing the URL of the Fork. Use it to connect to the Fork from Ethers.js/Web3.js and send transactions to the Fork.
$contracts— global variable providing access to a map of JSON objects representing compiled contracts, the ABI, bytecode, etc. The map is indexed with the names of the smart contracts defined in the Solidity file.
$accounts— global variable containing a list of 10 Ethereum accounts created on the Fork. Each account has a balance of 100 ETH. Since a new Fork is created each time you run the Sandbox, the account addresses will also change, so make sure to reference an account by its index and not the actual account address.
debugger;instruction, and open your browser’s Developer Tools. When you run the Sandbox, the debugger will activate at that instruction.
debugger;instruction will have no effect, and your code will run without interruptions.
iframetag that you can embed inside another HTML document.