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I welcome you to this section of React JS.

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I believe some of you have heard the word react, react, react before.

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So in this video and the upcoming ones, we are going to dive in by moving step by step and learn some

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of the most important concepts when it comes to react by building your future applications using React

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JS.

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Well, by the time of recording this video, React JS is the most popular JavaScript library for building

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user interfaces.

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So before we move on, we need to learn the concept of React.

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So let's ask ourself this question What is React?

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JS Great, let's answer that, right?

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Let's move on.

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React.

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JS is a JavaScript library for building user interfaces.

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So these terms are live and now you know, JavaScript and library, right?

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You will talk about library very soon.

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And the key term here for React is what it is used to build user interfaces.

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So what is user interface?

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You dive in more about this.

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When we say user interface, it simply means that any time you open any application, what you see,

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how the content are been outlined is what you call the user interface.

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All right, so to be more clear here, I have took a picture of my application.

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I built converting application as an example.

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So you can see that what you see is what you call the user interface.

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To be more clear here, let's go to the application.

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Like I say, this application that I built is a voting application.

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All right.

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I don't dive you more about what is doing here, but what I want you to be aware of is what what you

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see on the page, how the content has been aligned is what you call the user interfaces.

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So before we can become a front end developer, we need to learn at least one of the JavaScript library

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for buildings and typefaces like we can use Vue, Angular or other library or frameworks, but React

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is the most popular one and is easy to use as well.

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So that's a job of react as it is used to build user interfaces.

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Right?

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Great.

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So now that you know what is React is all about in the next video, let's continue from here and learn

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some of the fact about React JS.