问用Javascript将动态对象转换为基于键子串的多级JSON数组

EN

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);

let o = {
  Honda_Bike: "white",
  Pulsar_Bike: "black",
  Royal_Enfield_Bike: "red",
  Hyundai_Car: "blue",
  Mercedes_Car: "grey",
  BMW_Car: "red"
}
let keys = Object.keys(o);
let result = keys.reduce((acc, cv) => {
  let [type] = cv.split('_').reverse();
  acc[type] = acc[type] || {};
  acc[type][cv] = o[cv];
  return acc;
}, {});
result = [{
  vehicle: result
}];
console.log(result);

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

var vehicleObj = {};
//loop thorugh the data object keys
Object.keys(data).forEach((key)=>{
  //split the key and get the last splited value
  var splitArray = key.split('_');
  var newKey = splitArray[splitArray.length - 1];
  //create a new object based on the splited value
  if(vehicleObj[newKey]){
    vehicleObj[newKey][key] = data[key];
  } else {
    vehicleObj[newKey] = {};
    vehicleObj[newKey][key] = data[key];
  }
});
//create final output object
var res = [{
  'vehicle': vehicleObj
}];
console.log(res);