javascript - 向javascript添加新对象的最佳实践

Question

我需要最佳实践的建议。 假设我有一个这样的卡车对象:

    var trucks = [
    {truckId:"1", Manufacturer:"Toyota", Type:"Tacoma", NoSeries:"1",mileage:"5000" },
    {truckId:"2", Manufacturer:"Ford", Type:"F-150", NoSeries:"2",mileage:"7644"},
    {truckId:"5", Manufacturer:"Geely", Type:"Bear", NoSeries:"5", mileage:"156778"},
    {truckId:"3", Manufacturer:"Nissan", Type:"Pathfinder", NoSeries:"3", mileage:"6722"},
    {truckId:"4", Manufacturer:"Tesla", Type:"Cybertruck", NoSeries:"4", mileage:"999999"},
 ];

我想添加这个新的维护记录对象:

 let newmaintenanceRecord = 
[
    {complains: "Broken AC", action: "Fixed Leaky Condensor"}, 
    {complains: "sounds like a hammer pounding midget in the trunk", action: "took hammer away from midget"}, 
]

进入 truckId#5 对象。

我在项目中尝试了这些行，但它说卡车不可迭代，

    let index = trucks.findIndex(truck => truck.truckId==="5");
    trucks = [...trucks[index], newmaintenanceRecord];
    console.log(trucks);

这些行删除了除新记录外的所有卡车对象

trucks = [trucks[index],...newmaintenanceRecord];

Answer 1

在你找到卡车的索引后:let index = trucks.findIndex(truck => truck.truckId==="5");，你可以修改这个对象:trucks[索引].maintenence = newmaintenanceRecord