ReactJS is a JavaScript library for building UI components for web applications. React was developed by Facebook and was released in 2013. Facebook extensively uses React in their products like Facebook, WhatsApp, Instagram etc. It is used by Facebook, Uber, Netflix, Twitter, Reddit, Paypal, Walmart, and many other popular websites.

Algorithm is a step by step method to solve a problem. When we think of solving a problem step by step, we are actually implementing an algorithm. Before writing code, we should first determine how to make the algorithm flow. There are 2 options in compiling the algorithm flow, by Flowchart or Pseudo-code. Algorithm Writing Methods Flowchart Flowchart is a visual representation of the control flow of an algorithm. This representation defines several things, such as: statements that need to be executed, decisions that need to be made, flow logic (for iteration and other purposes), and terminal that shows the starting and ending points. Flowchart Symbols And below is a sample of flowchart. Sample of Flowchart Pros (+) Flowchart is able to present control flow algorithm visually. So, it is easier for us to understand the flow of solving a problem or condition. It is easier to detect errors or inaccuracies in a complex and detailed flowchart. Cons (-) The work is time consumi...

Javascript is a programming language like Python, C++ and others. This language is widely used for web development. So we will encounter javascript when browsing the internet with a browser.

CSS is a Cascading Style Sheet language and is usually used to set the appearance of elements written in a markup language like HTML. And framework is a useful tool to make our work easier. By using a framework we can do things faster. CSS Framework helps us in setting the appearance of the elements on our page (Helps us in writing CSS).

Every Front-End Developer should know about Git and Gitlab. Git is software for tracking changes in any set of files, usually used for coordinating work among programmers collaboratively developing source code during software development. Its goals include speed, data integrity, and support for distributed, non-linear workflows (thousands of parallel branches running on different systems). And Gitlab or Github is one of free Git remote repositories where we can save project collaboration files in a cloud so every member of project can be accessed together and support each other to complete project documents. There are many remote repositories beside Gitlab and Github but these 2 repositories which are recommended to be used for Git learning.

CSS is the language for defining how the HTML Document is presented. Presenting HTML document to a user means turning it into a form that is usable for our readers. Browsers, such as Firefox, Chrome or Internet Explorer, are designed to present HTML documents visually.

HTML is a language markup to make Web Pages. Markup Language is a format in write where the writing will be processed become a display. Because HTML is a markup language, it is used to tell the browser to compose a web page and tell how the browser will display it. We can tell the browser to display other things, like images, italicized text, or even a list. And in HTML, we use Tag.