Express: Handling URL query parameters

README.md

Express: Handling URL query parameters

Prerequisites

1. Express "Hello World!" app created.

Assumptions

1. GET request includes query parameters after the ? symbol. Example:

   http://locahost:4000/forest?daylight=true
   

   • URL query parameters are automatically parsed by Express and are defined in the request.query object.

Instructions

1. Create a route handler for an endpoint of your choice:

   app.get('/forest', (request, response) => {
     response.send("You are in a deep, dark wood...");
   })

2. Add a conditional message based on a URL query parameter:

   app.get('/forest', (request, response) => {
     let daylight = request.query.daylight;
   
     if (daylight === 'true') {
       response.send("You are in a deep, decently lit wood...");
     } else {
       response.send("You are in a deep, dark wood...");
     }
   })

package.json

{
  "name": "express-post-requests",
  "version": "1.0.0",
  "description": "An introduction to handling POST requests",
  "main": "server.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "InceptionU",
  "license": "MIT",
  "dependencies": {
    "express": "^4.17.1"
  }
}

server.js

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

const PORT = process.env.PORT || 4000;

app.listen(PORT, function() {
  console.log(`Example app listening at port: ${PORT}`);
})

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

app.get('/forest', (request, response) => {
  let daylight = request.params.daylight;

  if (daylight === 'true') {
    response.send("You are in a deep, recently lit wood...");
  } else {
    response.send("You are in a deep, dark wood...");
  }

})