it has a value), then we will add a paragraph to the screen with the value of the respective variable. Node, on the other hand, is a snap to set up on all the major operating systems (Windows, OS X, and Linux) and enables easy collaboration. If you look at our EJS that we’ve added, we’re testing to see if either of our weather, or error variables are null. EJS is a simple templating language that lets you generate HTML markup with plain JavaScript. If the opening bracket also includes an equal sign:, then that code will add HTML to the result. With that in mind, EJS has opening and closing brackets: Anything between the brackets is executed. It helps to remember that EJS stands for Embedded JavaScript. Here’s the code, then I’ll walk you through it: This utility will walk you through creating a package.json file. Hit return to accept the defaults for these questions. Accept the defaults, entering Simple Web Server when prompted for a project description. We need to make two simple changes to our index.ejs to handle these three scenarios. In the server app directory, run the npm init utility. Once installed, we’re going to copy the boilerplate Express starter app from the Express documentation: const express = require('express') const app = express() app.get('/', function (req, res) To use express, install it in the console: npm install -save express Express is a minimalist web framework for Node.js - Express makes it very easy to create and run a web server with Node. We’re going to use Express to accomplish this. Now that we have all the puzzle pieces, we can start building! Creating our Server (with Express JS)įirst thing we need to do is get our server up and running. Within our weather-app directory, create a file named server.js - this file will house the code for our application.
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