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What Is JavaScript?

JavaScript is a text-based programming language that operates on both the client side and the server side in order to make web pages interactive. While CSS and HTML provide web pages with static contents, including the style and structure that appear on the page, JavaScript enables dynamic changing of these contents and enriches the user experience with advanced, interactive features.

 

Why Is JavaScript Used?

JavaScript allows developers to create unique, client-side scripts that enable the dynamism and interactivity of web elements. Developers can also write server-side code in JavaScript through the use of cross-platform engines like Node.js. Some basic examples of JavaScript at work include playing and pausing video embedded on a page and activating drop-down navigation menus. 

Developers often use front-end frameworks, such as React, Angular and Vue, when building web and mobile applications to reduce programming time and potential errors by importing prewritten code that executes common functionalities and components. These frameworks contain collections of code libraries that developers can use to streamline their workflow by reusing code that others have already created. Frameworks allow applications to remain manageable when scaling up while increasing collaboration between developers.

Related Reading From Built In ExpertsNode.js App Security: Let No One Through the (Digital) Gates

 

Is JavaScript Front End or Back End?

JavaScript is used across the entire web development stack, meaning that it has both front-end and back-end applications.

JavaScript is perhaps most commonly recognized as a front-end programming language dedicated to adding interactivity to web and mobile apps, but it has a wide range of backend development applications as well.

One of the most popular JavaScript runtime environments is Node.js, which can be used to build web servers and develop back-end infrastructure. By using Node.js, back-end developers can create support for data updates from the front-end, read front-end data, delete front-end data and build scalable network applications.

Likewise, frameworks such as Express, which is based on Node.js, can be helpful for the back-end. Developers can also use frameworks such as Next.js, Gatsby, Meteor for back-end development, depending on use cases. Express is useful for building web servers; Gatsby is a front-end framework used for generating static web pages; Next and Meteor are full-stack frameworks that can accomplish front and back-end development of the same technique through server-side rendering, which improves response time.

Learn JavaScript — Full Course for Beginners. | Video: freeCodeCamp.org

 

Is Python Better Than Javascript?

JavaScript remains the more popular programming language with many advantages, but Python presents other advantages that JavaScript lacks. In the end, which language is better depends on a website's particular needs.

Python generally presents less of a learning curve than JavaScript for those early in their programming careers. Where Python falls short, however, is in its scalability. Python does not support asynchronous programming, but Node.js does. This means JavaScript can handle a large number of users as well as large volumes of data with minimal server usage. Python is only able to accomplish cooperative multitasking through the use of co-routines.

Ultimately, whether Python or JavaScript is better for development depends on your project’s functionality and purpose, as well as your own particular skill set. For example, a front-end developer may be able to use JavaScript on the back-end as well without constraints, but if the application or website requires machine learning features, Python is preferable due to the numerous libraries available to reduce programming workflows and ensure functionality.

Courses

Expand Your JavaScript Career Opportunities

Learn top JavaScript skills and boost your capabilities with Udemy’s courses.

Udemy

Topic:

Discover the modern implementation of design patterns in JavaScript

 

What you'll learn:

  • Recognize and apply design patterns

  • Refactor existing…

4.5
(873)
Udemy

Topic:

In only seven hours you will learn enough javascript to transform from a Junior JS Dev into a Senior JS Guru

 

What you'll learn:

  • Impress interviewers with…

4.5
(6821)
Udemy

Topic:

Learn and build projects with pure JavaScript (No frameworks or libraries)

 

What you'll learn:

  • Modular learning sections & 10 real world projects with pure…

4.7
(27759)
Udemy

Topic:

An advanced JavaScript course for everyone! Scope, closures, prototypes, 'this', build your own framework, and more.

 

What you'll learn:

  • Grasp how Javascript…

4.7
(43370)
Certifications

JavaScript Certifications + Programs

Expand your career opportunities by earning a JavaScript certification from Udacity.

Start building maintainable JavaScript applications that can handle constantly changing data at scale. Discover not only how to create JavaScript-powered React applications, but how and why they work. This course dives deep into the tools and techniques you need to create custom web applications. Explore the essentials, including components, JSX, props, and state, build multi-page apps with React Router, and incorporate functionality from third-party APIs. Then, host the result with Heroku. 

 

What you'll accomplish

Incoming students should have a familiarity with HTML and the Document Object Model (DOM), along with a working knowledge of JavaScript programming and functions, objects, arrays, and classes.. Throughout this expert-designed program, you’ll:

  • Explore the essentials of programming with React, including components, JSX, props, and state.
  • Push your knowledge to the next level by learning not only how to create React applications, but how and why they work.
  • Build multi page web applications using the popular React Router package.
  • Call upon an application programming interface (API) in a React application.
  • Host a React application on Heroku to share with the world.
  • Apply what you’ve learned to build a custom React application.

 

Why General Assembly

Since 2011, General Assembly has graduated more than 40,000 students worldwide from the full time & part time courses. During the 2020 hiring shutdown, GA's students, instructors, and career coaches never lost focus, and the KPMG-validated numbers in their Outcomes report reflect it. *For students who graduated in 2020 — the peak of the pandemic — 74.4% of those who participated in GA's full-time Career Services program landed jobs within six months of graduation. General Assembly is proud of their grads + teams' relentless dedication and to see those numbers rising. Download the report here.

 

Your next step? Submit an application to talk to the General Assembly Admissions team


 

Note: reviews are referenced from Career Karma - https://careerkarma.com/schools/general-assembly

 

General Assembly

General Assembly’s JavaScript Development course teaches students Intermediate front-end development skills using JavaScript, jQuery, Git and GitHub, and the command line. You’ll apply what you’ve learned to build a modern, single- page web application utilizing industry best practices.

 

What you'll accomplish

This is an intermediate-level course and requires a basic knowledge of HTML and CSS in order to enroll. Throughout this expert-designed program, you’ll:

  • How to work with JavaScript, jQuery, the browser, and the Document Object Model (DOM).
  • The fundamentals of JavaScript in order to more easily learn how to work with associated frameworks and libraries.
  • The essentials of object-oriented programming so that you can more easily learn another object-oriented language.
  • How to consume data from APIs and persist data using a back-end-as-a-service provider like Firebase.
  • How to build a modern, single-page application using common design patterns.
  • Apply what you’ve learned to create a portfolio project: a single-page web app that adheres to modern JavaScript design patterns.

 

Why General Assembly

Since 2011, General Assembly has graduated more than 40,000 students worldwide from the full time & part time courses. During the 2020 hiring shutdown, GA's students, instructors, and career coaches never lost focus, and the KPMG-validated numbers in their Outcomes report reflect it. *For students who graduated in 2020 — the peak of the pandemic — 74.4% of those who participated in GA's full-time Career Services program landed jobs within six months of graduation. General Assembly is proud of their grads + teams' relentless dedication and to see those numbers rising. Download the report here.

 

Your next step? Submit an application to talk to the General Assembly Admissions team


 

Note: reviews are referenced from Career Karma - https://careerkarma.com/schools/general-assembly

 

General Assembly

General Assembly’s Front-End Web Development course equips complete beginners with the cutting-edge tools they need to build rich, interactive websites. Dive into essential programming languages, then round out your skill set with industry-relevant topics like responsive design, APIs, and version control. You’ll apply what you’ve learned to build a custom website from scratch.

What you'll accomplish

This is a beginner-friendly program with no prerequisites, although some students may have coded previously. First-time programmers will have access to pre-course preparatory lessons and additional resources to boost their confidence with key concepts. Throughout this expert-designed program, you’ll:

  • Discover how the web works.
  • Create the structure and style of a website using HTML and CSS.
  • Apply interactivity to a site with JavaScript programming fundamentals.
  • Host a website on a server.
  • Learn the basic technical vocabulary to communicate with front-end web developers and other technical stakeholders.
  • Apply what you’ve learned to create a portfolio project: a dynamic, responsive website.

 

Why General Assembly

Since 2011, General Assembly has graduated more than 40,000 students worldwide from the full time & part time courses. During the 2020 hiring shutdown, GA's students, instructors, and career coaches never lost focus, and the KPMG-validated numbers in their Outcomes report reflect it. *For students who graduated in 2020 — the peak of the pandemic — 74.4% of those who participated in GA's full-time Career Services program landed jobs within six months of graduation. General Assembly is proud of their grads + teams' relentless dedication and to see those numbers rising. Download the report here.

 

Your next step? Submit an application to talk to the General Assembly Admissions team


 

Note: reviews are referenced from Career Karma - https://careerkarma.com/schools/general-assembly

 

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Brief History of Javascript
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