window.addEventListener('load', function() {
  // Checking if Web3 has been injected by the browser
  if (typeof web3 !== 'undefined') {
    // Use Guarda provider
    web3js = new Web3(web3.currentProvider);
    // Check if extension is unlocked:
    setInterval(function() {
        // Old fashion way.
        var isUnlocked = window.web3.eth.accounts[0].length > 0;
        // New way (See next section)
        var isLocked = !!window.guarda.defaultWallet
      }, 1000);
  } else {
    // Guarda Extension is not install, handle this case:
    handleThisCase();
  }
  // Now you can start your app
  startYourApp()
})

// Check is extension is unlocked
window.addEventListener('load', () => {
    // provides info about all wallets
    const defaultWallet = windows.guarda.defaultWallet;

    //   {address: "0xc0539d482eFF70648540dddddddddddddd",
    //    balance: "0.1",
    //    currency: "eth"}

    // provides info about deafault wallet
    const wallets = window.guarda.wallets;

    //   [{address: "RViGdXfC7BR2U6iYt5BJFJasdasddqwqd", currency: "kmd", balance: "0"}
    //    {address: "QWWwr8XwcEyp6tgPeRBbxXmoAsdqdawqew", currency: "qtum", balance: "0"}
    //    {address: "0xc0539d482eFF70648540dddddddddddddd", currency: "eth",balance:"0.1"}]
})