Javascript映射到关联数组？

// 创建一个关联数组（对象）
let associativeArray = {
  key1: 'value1',
  key2: 'value2',
  key3: 'value3'
};

// 访问关联数组中的元素
console.log(associativeArray.key1); // 输出: value1
console.log(associativeArray['key2']); // 输出: value2

// 添加新的键值对
associativeArray.key4 = 'value4';
console.log(associativeArray); // 输出: { key1: 'value1', key2: 'value2', key3: 'value3', key4: 'value4' }

// 删除键值对
delete associativeArray.key3;
console.log(associativeArray); // 输出: { key1: 'value1', key2: 'value2', key4: 'value4' }

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

if ('key1' in associativeArray) {
  console.log('key1 exists');
}

let array = Object.keys(associativeArray).map(key => ({ key: key, value: associativeArray[key] }));
console.log(array);