my remix
pragma solidity ^0.4.24;
contract Foo {
bytes32 foo;
function setFoo(bytes32 _foo) public {
foo = _foo;
}
function getFoo() public constant returns (bytes32) {
return foo;
}
}
my script
var web3 = new Web3(new Web3.providers.HttpProvider('http://localhost:8545'));
web3.eth.defaultAccounbt = web3.eth.accounts[0];
var fooContract = web3.eth.contract([{
"constant": true,
"inputs": [],
"name": "getFoo",
"outputs": [{
"name": "",
"type": "bytes32"
}],
"payable": false,
"stateMutability": "view",
"type": "function"
},
{
"constant": false,
"inputs": [{
"name": "_foo",
"type": "bytes32"
}],
"name": "setFoo",
"outputs": [],
"payable": false,
"stateMutability": "nonpayable",
"type": "function"
}
]);
var foo = fooContract.at('0xe884fb988c3242bcd16a0e187b10e6261733477e');
my chrome console
foo.setFoo("hello world");