How to add Custom Network in Metamask using Window.Ethereum

#blockchain #web3 #javascript #webdev

What if! if the Metamask has no Network, The user wants to works with.He needs to add manually in Metamask.

It may take sometime. By Copy & Paste! by surfing other website and getting details.

Using ChainLink user can add the Network Easily. But Not all time, it won't works!

The Developer will have a query! Then How to I add Programmatically???

Here Comes up with a Solution!

A JavaScript code using Window.Ethereum.

A Program to Connect Polygon Mainnet Easily

const addNetwork = await window.ethereum.request({
        method: "wallet_addEthereumChain",
        params: [{
          chainId: "0x89",
          rpcUrls: ["https://polygon-rpc.com/"],
          chainName: "Matic Mainnet",
          nativeCurrency: {
            name: "MATIC",
            symbol: "MATIC",
            decimals: 18
          },
          blockExplorerUrls: ["https://polygonscan.com/"]
        }]
      });

Hope it may useful for Dapp Devs.