如何在Dojo中迭代对象(关联数组)？

let obj = {
  key1: 'value1',
  key2: 'value2',
  key3: 'value3'
};

for (let key in obj) {
  if (obj.hasOwnProperty(key)) {
    console.log(key + ': ' + obj[key]);
  }
}

let obj = {
  key1: 'value1',
  key2: 'value2',
  key3: 'value3'
};

Object.keys(obj).forEach(function(key) {
  console.log(key + ': ' + obj[key]);
});

let obj = {
  key1: 'value1',
  key2: 'value2',
  key3: 'value3'
};

Object.entries(obj).forEach(function([key, value]) {
  console.log(key + ': ' + value);
});

let obj = {
  key1: 'value1',
  key2: 'value2',
  key3: 'value3'
};

for (let [key, value] of Object.entries(obj)) {
  console.log(key + ': ' + value);
}