javascript - 使用 Javascript 基于 Key Substring 将动态对象转换为多级 JSON 数组

Question

我想基于 Key Substring 从平面动态对象创建多级 JSON 数组

示例动态对象

{
  Honda_Bike: "white",
  Pulsar_Bike: "black",
  Royal_Enfield_Bike: "red",
  Hyundai_Car: "blue",
  Mercedes_Car: "grey",
  BMW_Car: "red"
}

示例 Json 多级数组

[{
  vehicle : {
    bike: {
      Honda_Bike: "white",
      Pulsar_Bike: "black",
      Royal_Enfield_Bike: "red"
    },
    car: {
      Hyundai_Car: "blue",
      Mercedes_Car: "grey",
      BMW_Car: "red"
    },
  }
}]

Answer 1

使用 reduce 迭代输入对象的条目以检查项目并将其分类为所需的输出格式:

const input = {
  Honda_Bike: "white",
  Pulsar_Bike: "black",
  Royal_Enfield_Bike: "red",
  Hyundai_Car: "blue",
  Mercedes_Car: "grey",
  BMW_Car: "red"
};
const output = [{ }];
output[0].vehicle = Object.entries(input).reduce((a, [key, val]) => {
  const vehicleName = key.match(/([^_]+)$/)[0];
  if (!a[vehicleName]) a[vehicleName] = {};
  a[vehicleName][key] = val;
  return a;
}, {});
console.log(output);