初始化一个node项目

初始化一个nodejs项目

# cd到目录,初始化
npm init

安装依赖

npm install express
npm install --save-dev nodemon

package.json

{
  "name": "soap-demo",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "start": "node index.js",
    "dev": "nodemon index.js"
  },
  "author": "",
  "license": "ISC",
  "dependencies": {
    "express": "^5.0.0-beta.2"
  },
  "devDependencies": {
    "nodemon": "^3.1.0"
  }
}

index.js

const express = require('express')
const app = express()

let notes = [

]

app.get('/', (request, response) => {
  response.send('<h1>Hello World!</h1>')
})

app.get('/api/notes', (request, response) => {
  response.json(notes)
})

const PORT = 3001
app.listen(PORT, () => {
  console.log(`Server running on port ${PORT}`)
})