Here is a detailed guide to the integration of Metamask with React Eterersj and use it as a RPC supplier for the Ethereum application:
Step 1: Set metamask
Make sure you have a metamascaster installed in the browser. If not, download and install from [official website Metamask] (
Step 2: Create the instance of the Web3 supplier with Metamask
Create a new file called “web3.js” at the base of the project catalog:
`Javascript
// web3.js
Const web3 = requires ("web3");
Ethersprovider class {
constructor () {)
Const providerur = window.ethereum.selectedaddress;
Const Networkid = window.ethereum.chainid;
Const Web3 = New Web3 (Window.ethereum);
If (supplier and network) {
Return Web3.Providers Etersprovider ({{{
Supplier: Supplier
Chain: Networkid
});
} Otherwise {
Console.error ("not finding metamascus");
Throw a new error ("the metamask is not installed or the address was found");
}
}
}
Module.exports = Ersprovider;
This code creates the “Etherprovider” class, which sets the Web3 instance with Metamascus as a Polish RPC supplier. The designer checks whether the URL Metamask and ID is available and used to create a new Web3 instance.
Step 3: Use Ethersprovider in the React application **
In your main file ‘app
`Javascript
// App.JS
Import to answer from the "answer";
Import reaction from "React-Dom";
Import web3provider z './Web3.js';
App () {) function
return (
{/ Content of your application here /}
);
}
Reactdom.nder (
{/ Content of your application here /}
,
Document.getelementbyid ("root")
);
Step 4: Use the web3 instance in your react components
**
Using the “Web3” instance to cause the interaction of Ethereum and Blockchain. For example::
`Javascript
// Mycomponent.js
Import React, {Usestate} with "React";
Import web3provider z './Web3.js';
Mycomponent () {) function {
Const [Accountadddress, SetaccountDress] = Usestate ('0x ...');
Async Trealgetgalance () {) function
Const bilant = Waiting for web3provider.eth.getbalance (Cancedress);
Console.log (bilant conct: $ {bilant});
}
return (
My component
);
}
In this code, he uses the “Web3Provider” instance to get the current account address and call “Getbalance”, which returns the balance of the Ethereum account.
That’s all!
Thanks to these steps, you should now have a metamask as a RPC supplier at React Ethersjs. You can use this supplier to interact with Blockchain React.