contract CryptoExchange {
event Deposit(uint256 indexed _market, address indexed _sender, uint256 _amount, uint256 _time);
function deposit(uint256 _amount, uint256 _market) returns (int256) {
// perform deposit, update user’s balance, etc
Deposit(_market, msg.sender, _amount, now);
}
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
</head>
<body>
<button onclick="gettronweb()">Can you get tronweb from tronlink?</button>
<script>
function gettronweb(){
if(window.tronWeb && window.tronWeb.defaultAddress.base58){
document.write("Yes, catch it:",window.tronWeb.defaultAddress.base58)
}
}
</script>
</body>
</html>
Getting contract instance after tronweb is initiated.
also subscribing to Deposite event with contract.EventName().watch() which returns promise.
let contract = await tronWeb.contract.at('contractAddress');
contract.Deposite().watch((err, event) => {
if (err){
return console.error('Error with "method" event:', err);
}
if (event) {
// some function
}
});
