Derek Zhu
Status code problem Nest will give a default status code of 200 when the request is successful. But we can also customize the status code and return. Nest does not need to memorize all status codes,
Generate a controller by running the Nest CLI Command: nest generate controller, which can be abbreviated as nest g co. Then enter the name of the controller. (If you don’t want to generate test fil
Difference between NestJS and NodeJS NestJS is a framework that lets programmers focus on the application problem at hand rather than the tiny implementation details like setting up TypeScript, API
Create a project First create the src folder in the project folder, then create the entry file index.js in it, then run npm init -y . Then install express, dotenv, cors, morgan, Mongoose packages. n
Create interface steps (summarize previous lessons) Create the basic server: app.js 123456const express = require('express')const app = express()//main codeapp.listen(80, function(){
Classification of middleware Express officially divides common middleware usage into five categories: Application-level middleware Route-level middleware Error-level middleware Express built-in
The concept of middleware Middleware refers specifically to the intermediate processing links of business processes. The calling process of Express middleware is that when a request arrives at the E
express.static() express.static() can be very convenient to create a static resource server. It can specify a directory to be hosted as a static resource folder, and can access all files under the d