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JavaScript from Frontend to Backend

JavaScript from Frontend to Backend

By : Eric Sarrion
4.3 (11)
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JavaScript from Frontend to Backend

JavaScript from Frontend to Backend

4.3 (11)
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)
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1
Part 1: JavaScript Syntax
4
Part 2: JavaScript on the Client-Side
8
Part 3: JavaScript on the Server-Side

Using directives

Vue.js improves the writing of HTML code by offering to write its own components, as we have seen in the preceding section. The framework also makes it easier to write basic HTML code by adding new attributes to the HTML elements or to the components created. These new attributes are called directives.

Note

Directives are used exclusively in HTML elements or created components, that is, in the template section of components.

Their name begins with v-, so as not to be confused with other existing HTML attributes. The main directives are v-if, v-else, v-show, v-for, and v-model. They will be explained now.

The v-if and v-else directives

The v-if directive is used to specify a condition. If true, the HTML element (or component) will be inserted into the HTML page. Otherwise, it will not be present.

Let’s use the v-if directive to indicate that we want to display the value of the counter only for values less than or equal to 20. As soon as the...

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