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Welcome back.

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Let's next we're going to talk about Jason.

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So Jason stands for JavaScript Object Notation as this relates a lot to objects, but also relates to

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ways to save data and send data across the Internet.

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So what it does is it does what's called serializing and these serializing objects, which just means

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converting it to a string and then back into objects.

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There's a couple of things that we can do to do this.

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One is Jason Pass Jason that pass, which takes a string and makes an object out of it.

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And then there's Jason, that string of PHI, which takes an object and makes a string out of it.

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So that's what we're going to look at next.

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So we're going to start with our bill example and let's get rid of all the things that we're doing with

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Bill.

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Except for slugging it out at the end, so we have our object named EMP and has the information about

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it.

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So what we can do is we can use the JSON, that string of to string of five, this employee.

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So we'll say let em string equals Jason dot string of high up.

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And then instead of outputting the EMP, well I'll put the upstream.

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And then it puts it into this JSON notation and so you can see here that it says a curly brace and a

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curly brace is the beginning in the end of an object.

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And this looks exactly like how we're defining this object.

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Curly brace, curly brace.

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But it's the string is the difference.

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So everything here is exactly how it looks.

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To the left, we have our name, Bill.

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No.

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One, two, three, four, five.

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Full time true salary.

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Ten shifts is an array, but the difference is that we can take this and we can copy it and do something

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with it.

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Sorry, is notepad program note pad plus.

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Plus I just pasted in here and there we have it inside of a text editor that we can use later.

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So let's go back to our program for a second.

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Now that we've converted to a string, let's convert it back into an object.

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So we would say let obj equals Jason that pass.

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I'm straight and we want to get out.

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All right, so then we have our string and now we have our object back in this object notation.

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Now, what can we do with this now that we have a string, so let's say instead of creating one object,

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we created a array that has a simply so do that.

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All we need to do is put square brackets around it.

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So it's bracket here, you end up with a square bracket and now we have an array of employees, except

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that we only have one employee.

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So let's run that and see what the difference is.

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So it puts the square bracket here and here, it's in an array notation to break it down, this length

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of one in the array in that.

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So let's copy this instead of the other thing and go back to that notepad or paste it in here.

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So let's get rid of defining it here and what we're going to do, we'll say, equals let's start all

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the way down here.

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But scoring equals prompt answer the employees.

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So what I'm doing is taking a simplistic way of saying, asking for a website to give me the employees

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I want to display on my screen.

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So I'm just going to type them in instead of the website giving them to me.

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So I'm going to get my hamstring.

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I'm going to convert it to an object.

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So let's run this.

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Or run, if we get our prompt, I'm just going to go back to this dopehead plus plus and copy this

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and pasted it in here.

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So there it is, turn into an object again.

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Now, let's say that we want to do is read in our current database, which is you can think of this

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as a database, a set of data that's stored.

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And we want to add another employee to it so we can say we've read our employee object and we know it's

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an array.

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So we say let new AMP equals and we'll create a new employee.

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And then we were created with the same format as the old employee.

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So let's let's get that out of here and just use this to change some of the information.

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So we don't want an array, we just want an object.

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So it's just kind of formatted ourselves.

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Now you can have the the quotes in around me, the names, but it's not really standard to do when you're

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defining an object in JavaScript.

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So I'm going to get rid of them.

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I do a line, I quite like that.

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OK, so we're defining another bill, so we want to change the misinformation or Defensa and her employer

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numbers one, two, three, four, six, and full time.

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Still true or salary, let's say, is 11.

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And she works Sundays, Mondays, Tuesdays and Wednesdays and then off the rest of the week.

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All right.

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So we have a new employee, a new employee, and we've got an employee object, so we want to add it

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to it.

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So what we do is say up about that, push the new EP and then it's going we can output the object,

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but if we want to save the data, we want to save it as the string.

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So we'll say get back upstream and say equals Jace on that string of five amp and then we'll output

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that.

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All right.

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So we need to go back here and get our current data set and database pasted in here so that it has the

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starting data, and then you can see here that output an array of two.

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So we have Bill and we have Sue and we got the string output again.

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So we can go in here and just copy this and put it into our notepad.

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Now we've got more.

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So if we run this again, we're going to add another Sue, obviously, because unless you want to change

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all that information again so we can run it again

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at this, which is a longer set of data, and now we have three two sues and one bill.

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So you see that that the way that we use the Jason is we can store any amount of data we want in it,

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and it's used for like sending information and receiving information is its primary purpose.