如何使用地址在函数中创建新变量

function createNewVariable() {
  var newVariable = "Hello, World!";
  console.log(newVariable);
}

function createNewVariable(newVariable) {
  console.log(newVariable);
}

function createNewVariable() {
  return "Hello, World!";
}

var newVariable = createNewVariable();
console.log(newVariable);

function createNewVariable() {
  var obj = {};
  obj.newVariable = "Hello, World!";
  return obj;
}

var newObj = createNewVariable();
console.log(newObj.newVariable);