使用.delete删除对象

Question

在使用.delete时需要帮助。有人告诉我，我需要在数组中找到汽车对象的索引，并使用Array.splice删除该元素。这样做以后将在我使用Postman的响应中删除该对象。到目前为止，我已经获得了.get，.post，.patch和.use，但是我不知道如何使.delete正常工作。

到目前为止，这是我的js代码：

'use strict'

const cars = require('./cars.js')
const express = require('express')
const app = express()

app.use(express.json())


app.get('/api/cars', (req, res) => res.send({data: cars}))
app.get('/api/cars/:carId', (req, res) => {
    const car = cars.find(car => car.id === 
parseInt(req.params.carId))
    res.send({data: car})
  })

  app.post('/api/cars', (req, res) => {
    const {make, model, colour} = req.body
    const newCar = {
      id: Date.now(),
      make,
      model,
      colour
    }
    cars.push(newCar)
    res.status(201).send({data: newCar})
  })
  app.patch('/api/cars/:carId', (req, res) => {
    const id = parseInt(req.params.carId)
    const index = cars.findIndex(car => car.id === carId)
    if (index < 0) {
      res.status(404).send({
        errors: [
          {
            status: 'Not found',
            code: '404',
            title: 'Resource does not exist',
            description: `We could not find a car with id: ${carId}`
          }
        ]
      })
    } else {
      const {id, ...theRest} = req.body
      const updatedCar = Object.assign({}, cars[index], theRest)
      cars[index] = updatedCar
      res.send({data: updatedCar})
    }
  })
app.put('/api/cars/:carId', (req, res) => {
    const carId = parseInt(req.params.carId)
    const index = cars.findIndex(car => car.id === carId)
    if (index < 0) {
      res.status(404).send({
        errors: [
          {
            status: 'Not found',
            code: '404',
            title: 'Resource does not exist',
            description: `We could not find a car with id: ${carId}`
          }
        ]
      })
    } else {
      const {make, model, colour} = req.body
      const updatedCar = {carId, make, model, colour}
      cars[index] = updatedCar
      res.send({data: updatedCar})
    }
  })
app.delete('/api/cars/:carId', (req, res) => {

})

const port = process.env.port || 3030
app.listen(port, () => console.log(`Server listening on port ${port} ...`))

这是我的数组中的cars.js。

const cars = [{
    id: 1,
    make: 'Tesla',
    model: 'S',
    colour: 'Black'
},
{
    id: 2,
    make: 'Tesla',
    model: '3',
    colour: 'Red'
},
{
    id: 3,
    make: 'Tesla',
    model: 'X',
    colour: 'Silver'
},
{
    id: 4,
    make: 'Tesla',
    model: 'Y',
    colour: 'Chestnut Brown'
}
]

module.exports = cars;