How can I read contract memory with starknetjs?

🔍 Read contract memory, with the call :

To read the balance, you need only to connect a Provider and a Contract. You have to use the call function: contract.call("function_name",[params]) (here params is not necessary, because there are no parameters for the get_balance function).

//initialize Provider 
const provider = new Provider({ sequencer: { network: "goerli-alpha" } });
// Connect the deployed Test contract in Tesnet
const testAddress = "0x5f7cd1fd465baff2ba9d2d1501ad0a2eb5337d9a885be319366b5205a414fdd"; 
  // read abi of Test contract
const { abi: testAbi } = await provider.getClassAt(testAddress);
if (testAbi === undefined) { throw new Error("no abi.") };
const myTestContract = new Contract(testAbi, testAddress, provider);
// Interaction with the contract with call 
const bal1 = await myTestContract.call("get_balance");
console.log("Initial balance =", bal1.res.toString()); // .res because the  return value is called 'res' in the cairo contract****