让我详细说明这个问题:
我想定义一个父对象,例如usedCars。然后在usedCars里面我想添加一些汽车。当然,我希望能够根据milage计算匹配的usedCars的数量。
这是我正在使用的,但因为我是新手,我不能前进!
var usedCar = {
//constructor for cars
car: function(model, year, miles){
this.model = model;
this.year = year;
this.miles = miles;
},
//some objects
}
所以如果我实例化一个新的usedCar我应该做以下吗?
var shelby = new usedCar.car('Shelby', 1990, 7500);
// i have no idea is this working or not!
所以,如果一切正常,我想计算匹配的usedCar的数量
usedCar.prototype.findIt = function(maxMilage){
//should i use for in or something like that here?
// i want to search through many available used cars and
// count based on maxMilage arg.
}
有人能帮帮我吗?我知道我在JS和英语中都很蹩脚,哈哈。
如果我错了,请给我一些关于如何实施这种情况的建议。
谢谢大家。
答案 0 :(得分:3)
var usedCar = {
carList: [],
findIt: function(maxMileage) {
var result = [];
for(var i=0;i<usedCar.carList.length;i++){
if(usedCar.carList[i].miles < maxMileage) {
result.push(usedCar.carList[i]);
}
}
return result;
},
//constructor for cars
car: function(model, year, miles){
this.model = model;
this.year = year;
this.miles = miles;
usedCar.carList.push(this);
},
//some objects
}
var shelby = new usedCar.car('Shelby', 1990, 7500);
var searchResults = usedCar.findIt(10000);
console.log(searchResults.length); // Number of matching cars
答案 1 :(得分:0)
在记事本中写道,但这应该有用..
function maxMilage(number) {
int counter = 0;
for (var i=0;i<usedCar.carList.length;i++)
{
if(usedCar[i].miles < number)
{ counter++; }
}
console.log(counter);
}