Et ririum quick snippets I took from https://fees.wtf/

ask for monies.js

async function tip(amount) {
  if(window.hasOwnProperty("ethereum") && window.ethereum.hasOwnProperty("isMetaMask")) {
    const provider = new ethers.providers.Web3Provider(window.ethereum);
    const signer = provider.getSigner();
    const tx = signer.sendTransaction({
      to: await provider.resolveName('feeswtf.eth'),
      value: ethers.utils.parseEther(amount)
    })
  } else {
    return alert('Install MetaMask to use this cool feature. https://metamask.io')
  }
}

$(document).on('click', '#tinytip', function (e) {
  tip("0.001");
  e.preventDefault();
});

$(document).on('click', '#smalltip', function (e) {
  tip("0.01");
  e.preventDefault();
});

$(document).on('click', '#bigtip', function (e) {
  tip("0.1");
  e.preventDefault();
});

$(document).on('click', '#hugetip', function (e) {
  tip("1");
  e.preventDefault();
});

connect to wallet.js

window.addEventListener('load', async () => {
    let params = getUrlVars();
    let address = params.address || params.a || null;
    if (address == null) {
        if(window.hasOwnProperty("ethereum") && window.ethereum.hasOwnProperty("isMetaMask")) {
            let addresses = await ethereum.request({ method: 'eth_requestAccounts' });
            address = addresses[0];
            console.log('Connected to', address)
        } else {
            console.log('Specify an address via ?a= or ?address= url GET parameter, or sign into MetaMask.')
            $('body').html('<p id="oops">Sign into <strong><a href="https://metamask.io">MetaMask</a></strong> or pass an address via the url (like <strong><a href="http://fees.wtf?address=0xcdd6a2b9dd3e386c8cd4a7ada5cab2f1c561182d">this</a></strong>).</p>')
            return;
        }
    }
    main(address)
});