provider.once vs just using transactionResponse.wait()

[valentinfernandez1]

In section 8 - HTML / Javascript Fund Me (Full Stack / Front End) a functions is created called listenForTransactionMine() witch uses provider.once() to wait for the transaction to finish and then it gets returned as a promise.

function listenForTransactionMine(transactionResponse, provider) {
console.log("Mining ${transactionResponse.hash}...");
return new Promise((resolve, reject) => {
provider.once(transactionResponse.hash, (transactionReceipt) => {
console.log( "Completed with ${transactionReceipt.confirmations} confirmations" );
resolve();
});
});
}

Why is it better to use that instead of transactionResponse.wait()??
const transactionReceipt = await transactionResponse.wait(1) console.log(transactionReceipt)

[PatrickAlphaC]

Great question!

And the answer is... it's not.

I just wanted to show you how to listen for events on the UI

Note: Please use 3 backticks when dropping a large amount of code. It'll format much nicer.