如何从前端检查质子链用户是否正确可靠地存在？

Question

If I go to https://protonscan.io/accounts/username I get a 400 response for a user that doesn't exist and a 200 response for a user that exists on get_account ( https://proton.greymass.com/v1/chain/get_account )

How do we check this properly and reliably and "Nice to have": How do we get the avatar for that user or other information, all from the front end?

Thanks.

Answer 1

I personally use that code on backend (typscript).

async isAccountExist(newAccountName: string): Promise<boolean> {
const rpc = new ProtonRPC();
const account = await rpc.getAccount(newAccountName);
if (account) return true;
return false;

}

Answer 2

So the solution I chose is this:

let userProvided; // here I get the username from the front-end
// then I fetch the user's data
fetch('https://proton.eosusa.news/v2/state/get_account?account=' + userProvided).then(response => {
  return response.json();
}).then(data => {
// after the data is parsed into an object we can use it here
   console.log(data);
});