How do I interact with a smart contract on a private network through web3 js

Question

I have deployed my smart contract on private network using mist and geth. Following is my script:

if (typeof web3 !== 'undefined') {
            web3 = new Web3(web3.currentProvider);
        } else {
            // set the provider you want from Web3.providers
            web3 = new Web3(new Web3.providers.HttpProvider("http://localhost:8545"));
        }
web3.eth.defaultAccount = web3.eth.accounts[0];
var CoursetroContract = web3.eth.contract(YOUR ABI);

var Coursetro = CoursetroContract.at('PASTE CONTRACT ADDRESS HERE');
console.log(Coursetro);

Now, how do i interact with smart contracts using Web3.js?

Answer 1

The web3.eth.Contract object makes it easy to interact with smart contracts on the ethereum blockchain. When you create a new contract object you give it the json interface of the respective smart contract and web3 will auto convert all calls into low level ABI calls over RPC for you.

To know more, visit: https://web3js.readthedocs.io/en/1.0/web3-eth-contract.html

Answer 2

I found a blog that explains how you can do this. I am sharing the link to the blog. Hope it helps:

https://medium.com/@amkurian/interacting-with-ethereum-smart-contracts-through-web3-js-e0efad17977