I added a new function exampleFunc in solidity the mycontract.json file gets updated with that function with public visibility but web3.eth.contract(abiArray).at(address); does not contains the newly added function.

var con = require('../../build/contracts/MyContract.json');
var keys = Object.keys(con.networks);
var address = con.networks[keys[keys.length-1]].address;
var abiArray = con.abi;

        const web3 = new Web3(window.web3.currentProvider);
        this.instance = web3.eth.contract(abiArray).at(address);

1 Answer 1


delete your 'build' folder and recompile..for some reason its like a magic cure when it comes to truffle

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