Book Image

JavaScript from Frontend to Backend

By : Eric Sarrion
Book Image

JavaScript from Frontend to Backend

By: Eric Sarrion

Overview of this book

JavaScript, the most widely used programming language in the world, has numerous libraries and modules and a dizzying array of need-to-know topics. Picking a starting point can be difficult. Enter JavaScript from Frontend to Backend. This concise, practical guide will get you up to speed in next to no time. This book begins with the basics of variables and objects in JavaScript and then moves quickly on to building components on the client-side with Vue.js and a simple list management application. After that, the focus shifts to the server-side and Node.js, where you’ll examine the MVC model and explore the Express module. Once you've got to grips with the server-side and the client-side, the only thing that remains is the database. You’ll discover MongoDB and the Mongoose module. In the final chapter of this fast-paced guide, you'll combine all these pieces to integrate a Vue.js application into a Node.js server, using Express to structure the server code and MongoDB to store the information. By the end of this book, you will have the skills and confidence to successfully implement JavaScript concepts in your own projects and begin your career as a JavaScript developer.
Table of Contents (14 chapters)
1
Part 1: JavaScript Syntax
4
Part 2: JavaScript on the Client-Side
8
Part 3: JavaScript on the Server-Side

Displaying application screens

Here, we visualize the screens of the application, allowing the following:

  • Displaying the already existing list (empty at first)
  • Inserting a new element at the end of the list
  • Modifying an element of the list
  • Removing an item from the list

    Note

    The URL to access the list is http://localhost:3000. The server used here is a Node.js server running with the Express module. The database used is MongoDB.

Initially, the list is empty. Only the Add Element button is present on the page (see the following figure):

Figure 9.1 – Empty item list

Clicking the Add Element button multiple times creates multiple rows with the text Element X followed by Remove and Modify buttons (here, we clicked on the Add Element button three times):

Figure 9.2 – Adding three items to the list

Next, let’s modify the second element. An input field appears in place of the item text. Let’...