I try interect with contract. I use this tutorial and this.
I deploed this contract in ropsten testnet by address: 0xF55F55d2b15949ae78a34478CF356D9fF8bB0629.
I can read counter value. But I can`t increse counter. I have error as:
This is code of my script in html file:
<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>Interect with contract</title>
<script src="js/web3.js">
</script>
</head>
<body>
<h1>Interact with contract</h1>
<button onclick="getCounter()">UpdateCounter</button>
<button onclick="increaseCounter()">IncreaseCounter</button>
<span id="myCounter"></span>
<script type="text/javascript">
var contractAddress = "0xF55F55d2b15949ae78a34478CF356D9fF8bB0629"; //in ropsten
var contractAbi = [{
"constant": true,
"inputs": [],
"name": "getCreator",
"outputs": [{
"name": "",
"type": "address"
}],
"payable": false,
"type": "function"
},
{
"constant": false,
"inputs": [],
"name": "kill",
"outputs": [],
"payable": false,
"type": "function"
},
{
"constant": false,
"inputs": [{
"name": "myNewNumber",
"type": "uint256"
}],
"name": "setMyNumber",
"outputs": [],
"payable": false,
"type": "function"
},
{
"constant": true,
"inputs": [],
"name": "getMyNumber",
"outputs": [{
"name": "",
"type": "uint256"
}],
"payable": false,
"type": "function"
},
{
"inputs": [],
"payable": false,
"type": "constructor"
}
];
web3 = new Web3(new Web3.providers.HttpProvider("https://ropsten.infura.io/some")); //connect with a Ropsten Test Net or use http://localhost:8545
// web3 = new Web3(web3.currentProvider);
var contractInstance = web3.eth.contract(contractAbi).at(contractAddress); //instance of contract nesessary to access the contract
function getCounter() {
document.getElementById("myCounter").innerText = contractInstance.getMyNumber().toNumber();
}
function increaseCounter() {
var currentNumber = contractInstance.getMyNumber().toNumber();
currentNumber++;
web3.personal.unlockAccount('0x959fd7ef9089b7142b6b908dc3a8af7aa8ff0fa1', "some");
contractInstance.setMyNumber(
currentNumber, {
from: '0x959fd7ef9089b7142b6b908dc3a8af7aa8ff0fa1',
gas: 2000000
},
function (error, result) {
if (error) {
console.error(error);
} else {
var txHash = result;
console.log(txHash);
}
});
}
</script>
</body>
</html>
I don`t use geth. Is it possible to do without using geht? How can I fix error?
