Introduction

Hello,

Welcome to the Introduction to Javascript course. 

In this course, we will introduce the Javascript language and learn the basic structures.

If you do not have HTML knowledge before, I must say that HTML knowledge is a prerequisite to start this course.

Javascript is used in many areas from Web applications to mobile applications, database systems, and server-side systems (such as NodeJS).

The programming language is undoubtedly one of the most popular software technologies in the world with its acceleration in the last 10 years.

Javascript is currently ECMAScript 2020, the latest version implemented by modern browsers.

Let me answer the question in your mind immediately?

What is the difference between Javascript and Ecmascript?

There is no need to tell the story of the incident. Let's just memorize that the official name of Javascript is Ecmascript.

The specification, which you can reach from the address below, is written in the same way as Ecmascript.

When we see the name Ecmascript anywhere, we can think that it is actually Javascript.

The last version of Javascript currently in use is Ecmascript 2020 or Ecmascript 11 version.

Our course is based on the use of Javascript in the Web world.

We have previously learned both HTML and CSS in our HTML Getting Started and CSS Courses.

The web is based on HTML, CSS, and Javascript languages. Let's start to learn the Javascript language, the last link of this trio.

You are definitely in the right place.

Javascript has a wide spectrum in many areas of the software with its high productivity.

Are Javascript and Java the same language?

They are absolutely different languages.

Java has historically been developed earlier. Subsequently, the Javascript language was developed.

Java class-based is a type-safe language that runs on JVM, while Javascript is a non-type-safe language that offers prototype-based inheritance and is developed for browsers to work on their vast.

They have similarities in syntax. Also, let's say that Java and the Javascript language do not have a relationship except name similarity.

What are the usage areas of Javascript language outside of the web?

Besides being one of the three cornerstones of Javascript web pages, it forms the basis of an important project such as NodeJS on the server-side.

On the mobile side, it is used in hybrid solutions for mobile application development with mobile frameworks such as React Native, Ionic.

Due to the flexible and lightweight architecture of Javascript, technological solutions are available for many areas, from various databases to IoT devices and games.

What is the role of the Javascript language in the web world?

The importance of the Javascript language, which has been an essential part of the web world since the mid-90s, has increased even more after the mid-2000s.

Thanks to the Javascript language, many business logic has become applicable in browsers. Websites have become more interactive with the help of frameworks and libraries such as React, Angular, Vue.

In the first period of the web, the web pages, which were generally used to provide information, turned into web applications where the user can enter data in the next period.

Social media pages such as Facebook and Twitter are two good examples of modern web applications where Javascript is used extensively.

Another advantage of using Javascript on the client-side is that some tasks are performed on the client-side instead of the server, thereby reducing the load on the server.

Can I develop web pages with only HTML and CSS without learning Javascript?

Yes, you can. A web page can be developed using only HTML and CSS, but the Javascript language is indispensable for controlling user-created events, programming in the browser, and creating more dynamic web pages.

Is Javascript challenging to learn?

Javascript is not difficult to learn. However, some concepts such as prototype inheritance, Closure, and Lexical Scope can be difficult for developers to grasp at first.

I will do my best to increase your Javascript knowledge in the courses within Coddykit quickly.

Where will I write my Javascript applications?

You can watch the video below for Editor selection before starting to develop the Javascript language.

If you say you can write with an online tool other than the editor, there are good alternatives like jsfiddle.net.

Do all browsers support ES2020, the latest version of Javascript?

We know that many features of ES2020 currently exist in modern and up-to-date browsers.

How do we use Javascript in web pages?

We know what HTML and CSS are because it is a prerequisite for starting the course.

Javascript, on the other hand, supports many aspects such as validating the forms entered by users in HTML without sending them to the server, setting the mechanism to give feedback to the user without refreshing the page using AJAX, supporting HTML, and CSS to prepare more advanced user interfaces.

Apart from this, it has been used to make dynamic web applications of Single Page Applications (such as React, Angular, and Vue), which has become more widespread in recent years.

Congratulations 🎉

In our first lesson, we learned what Javascript is.

In the next section, we will write our first Javascript codes.