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Hello, guys.

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Good to see you back once again.

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I'm back with a new tutorial and in this tutorial we are going to learn about Jason.

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We are going to learn what is the usage of Jason and why should we learn?

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Now let's try to understand what is the meaning of Jason.

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Jason stands for JavaScript Object Notation, and if we talk about what is the usage of Jason, it is

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used to store and exchange data.

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Now you might confuse Jason is related to JavaScript.

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No it is not.

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It is not related to JavaScript.

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But there is a reason that we use JavaScript in its name.

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There is a thing in JavaScript which we call object literal, otherwise JavaScript object.

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When Jason was created, it is pretty similar with JavaScript objects.

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That is why it was known as JavaScript Object Notation.

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And once again I'm going to told you JavaScript is not related to Jason.

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It is only used for store and exchange data.

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Now let's talk more about it whenever we create a website.

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Otherwise web application its depend on two main thing.

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First one is client and second one is server.

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In your client site.

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It could be anything I want to say, it could be a mobile, otherwise laptop, desktop, etcetera.

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And whenever we need to exchange data and get the response at the current time otherwise too quickly,

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then we use Json between them.

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And as I told you, Json is not a language, it is data exchange format without Json.

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We have another popular data format which is XML.

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It is also used to exchange data, but as compared to XML, Json is more popular and reliable.

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But you might have question why Jason is more popular.

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And to understand it, first we need to talk about their syntax.

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If I talk about Json format, its look like in JavaScript object.

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In JavaScript objects we use curly braces and also we use key and value pair.

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But XML is different.

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This is the XML data format.

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Here we need to use tag like HTML to contain data.

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As you can see for their name we use name tag for age, we use tag and for the object here we use student

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tag.

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And there are a lot of difference between Json and XML.

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So let's see the difference between Json and XML.

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First they are full from Json stands for JavaScript Object Notation, but XML stands for Extensible

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Markup Language.

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It is a language, but Json is not a language.

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The next different is Json based on text format, but XML based on markup language.

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It is quite similar with HTML and it takes time to learn XML, but you can understand Json within 10

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to 20 minutes.

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Next point is Json is lightweight but XML is heavier.

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That's why Json is more popular than XML.

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Tags and properties make XML very heavier, but the benefit is XML support comments and namespace but

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Json do not support comments and namespace.

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Now let's see the difference between Json and JavaScript object.

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As we know, Json is pretty similar to JavaScript object, but not the same as exact JavaScript object.

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So first I'm going to show you the JavaScript object.

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When we create a JavaScript object, first we need to declare a variable name.

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Also, we need to use curly braces to create an object.

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And inside this curly braces we take key.

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Otherwise we can call it property and value at the same way.

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To create a Json object here we need to use curly braces.

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But the difference is we should take property name inside the double quotes every time.

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And also we need to take double quotes for our value.

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But if I talk about JavaScript object, we don't need to use double quotation for property name.

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Also, we can take single quotes for value, but we cannot use single quotes whenever we create Json

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object.

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And if you want to print a Json object or a JavaScript object, nearly we need to follow the same method.

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Now let's talk about what kind of data type Json support Json support, string, data type, number,

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data type, boolean, data type, array object, and NULL.

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If we want to send empty value, then we use null data type.

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Otherwise, if you forgot to pass a value, then by default it is going to send null.

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And to understand all the values here I create an example.

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At first, as I told you, we need to take curly braces.

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Then inside the curly braces here we set our first property which is ID and as I told you, we need

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to use double quotes to take.

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The property name.

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Then here we use number data type.

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That's why we do not use any double quotes.

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Our next property is name, but for name here I use string data type.

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That's why we need to take it in a double quotes.

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And for married here I use boolean data type.

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That's why here I take true value.

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And for boolean value we don't need to use any double quotes.

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If you use boolean data type here, you can pass true otherwise false value.

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But at the next example, as you can see here, we do not send any data.

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So by default it's going to set null value.

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And for this hobby property here I use array value.

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That's why I use square braces.

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And inside the square braces we take the values.

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And for an address here we use object datatype.

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It is an object.

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That's why again we take curly braces.

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But if you notice for our next property vehicle here we take multiple object value inside this object.

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Here we take multiple objects and it's called nested objects.

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So these are the data types that we can use in Json.

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Now let's talk about the advantages of Json.

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Jason came with human readable format.

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Anyone can easily understand Json if anyone not come from any programming language background.

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Also he can understand Json and the next advantage is it is completely language independent.

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We can use Json with every programming languages like Python, PHP, JavaScript, Kotlin, Java, whatever,

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whatever language you use.

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And also Json is very lightweight to use.

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We send data to server to client in a Json format.

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Json played a big role in Ajax.

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Also rest API.

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Otherwise any APIs.

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That's why Json is so important.

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But there is one big disadvantage of Json.

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We cannot transfer any media file as Json format.

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We cannot transfer audio, video, images or any binary information.

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Here we can pass only text based information.

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And here is another important thing that we are going to learn about in our practical session.

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So this is it for this tutorial.

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In the next tutorial I'm going to start the practical about Json.

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So thanks for watching this video.

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Stay tuned.