Recurse Application

server.js

const http = require('http');
const url = require('url');

//Database
let database = [];

http.createServer((req, res) => {
   //Parsing query from URL
    let data = url.parse(req.url);
    //set method; takes 2 parameters key and value; response includes web page to confirm transaction;
    if (req.method === 'GET' && data.pathname === '/set'&& data.query.split('=').length === 2) {
        let key = data.query.split('=')[0];
        let value = data.query.split('=')[1];
        database.push({
            key,
            value
        });
        key = value = data = "";
        console.log(database);
        res.writeHead(200, {
            "Content-Type": "text/html"
        });
        res.write("<h1>Added " + JSON.stringify(database[database.length - 1]) + ". </h1>");
        res.end();
    }
    //get method takes 1 parameter: key and looks up a matching value in the database; response includes web page to confirm transaction
    //if value is undefined then no value is available for given key.
    else if (req.method === 'GET' && data.pathname === '/get' && data.query.split('=').length === 1) {
        let value;
        for (let i = 0; i < database.length; i++) {
            if (database[i].key == data.query) {
                value = database[i].value;
            }
        }
        console.log(value);
        res.writeHead(200, {
            "Content-Type": "text/html"
        });
        res.write("<h1>Key: " + data.query + "<br>Value: " + value + " </h1>");
        res.end();
      //Unsupported requests go through here
    } else {
        res.statusCode = 404;
        res.writeHead(200, {
            "Content-Type": "text/html"
        });
        res.write("<h1>Bad Request.</h1>");
        res.end();
    }
}).listen(4000);