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Deploying and running transactions

The Remix IDE provides three types of environments to execute transactions:

JavaScript VM: The sandbox environment runs emulated blockchain transactions in your browser. It provides 10 test addresses with 100 ether by default. This mode is convenient for quick prototyping and verification of a smart contract.
Injected provider: The provider connects to an external tool such as MetaMask.
Web3 provider: The provider connects to the remote node with geth or other Ethereum clients. It can directly connect to a private network and Ethereum blockchain.

In this section, we will use a JavaScript VM to deploy and run the MYERC20Token smart contract:

Select a JavaScript VM.
In the Contract drop-down menu, select ...

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