How to retrieve a value of a public state variable from Solidity smart contract in TypeScript?

Question

I am trying to return a value of a public state variable highestBid in solidity through JavaScript, what is a possible way to save the value from the call to a variable? Currently I am getting: undefined.

TS:

    async getHighestBid() {
       this.smartAuction.setProvider(this.provider);
       let result = await this.smartAuction.deployed().
                         then(function(contract: { highestBid: { call: () => Promise<any>; }; })  {contract.highestBid.call().
                         then(function(v) {return v})});
       console.log(result);
  }

Sol:

contract SmartAuction {
    address payable public beneficiary;
    uint public auctionEnd;

    address public highestBidder;
    uint public highestBid;

    mapping(address => uint) private pendingReturns;

    bool private ended;
...
}

@Yilmaz there seems to be no errors, the value is returned correctly while logging with console.log — dovexz12323, Dec 18 '22 at 14:39

score 1 · Answer 1 · answered Dec 18 '22 at 15:48

if console.log(result) logs correctly, you have to return result in the function so when you call the function, it will give you the return value.

 return result

in javascript if you do not return anything in a function, and if you call the function, it will execute the function body but it will return you undefined

How to retrieve a value of a public state variable from Solidity smart contract in TypeScript?

1 Answers1