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I am trying to initiate provider from the window.BinanceChain object injected by Binance Wallet chrome extension as I did it with the MetaMask extension before:

let provider = new ethers.providers.Web3Provider(window.ethereum);

But I have noticed that on page load I have initiated window.ethereum object, but undefined window.BinanceChain object:

console.log(window.ethereum)
console.log(window.BinanceChain)

The result is:

enter image description here

What is the proper way to initiate Binance Smart Chain provider on page load?

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  • Did you manage to solve this?
    – Majd TL
    Mar 19, 2021 at 12:53

1 Answer 1

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I had the same issue and I noted that window.BinanceChain object is not available as early as window.ethereum, so you need to wait for it. My solution was to add an additional state check:

   document.onreadystatechange = () => {
     if (document.readyState == "complete") {
       window.web3 = new Web3(window.BinanceChain);
       // do stuff
     }
   }

Tip: you can check if the object is available after the page is loaded by typing console.log(window.BinanceChain); inside the browser's developer tools in the console to see if it gets initialized at some point at all?

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