如何訪問由另一個智能合約建構子創建的令牌實例

我正在使用一個智能合約，它在其建構子中創建一個令牌實例：

contract Exemple{

      Token public myToken

      function Exemple(){
              myToken=Token(this);
      }
}

我如何從合約外部訪問這個令牌實例（使用 truffle 控制台）？例如發出如下命令：myToken.approve(address,value, {from: other_account})

希望我的問題有意義。這裡只是初學者…

您可以獲得如下合約實例：

使用 Web3：

   // ------- Get Web3 instance --------------------------------------------------------------
   var web3Client = new Web3(new Web3.providers.HttpProvider("http://localhost:8545"));

   // ------- Get ABI of the contract ---------------------------------------------------------
   // #################### REPLACE it with your ABI #############################
   var myContractABI = <contract ABI>;

   // ------- Get address of the contract -----------------------------------------------------
   // #################### REPLACE it with your Address #############################
   var myContractAddress = '<address of the contract from which it is deployed>';

   // ------- Create contract client ----------------------------------------------------------
   var myContract = web3Client.eth.contract(myContractABI);

   // ------- Create contract instance --------------------------------------------------------
   var myContractInstance = myContract.at(myContractAddress);

   // ------- Invoke any method of the instance ------------------------------------------------
   myContractInstance.myContractMethod();

從松露控制台：

   myContract.deployed().then(function(instance) {
       myContractInstance = instance;
   })

   myContractInstance.myMethod()

引用自：https://ethereum.stackexchange.com/questions/26028