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Welcome back.

As you know, I'm Eli, the computer guy, and in today's class, and when you give you a brief overview of what HTML is hypertext markup language, so HTML is a very necessary a language in order to be able to create websites and Web applications.

Basically, one of the things that you have to think about is that if you're going to be building a website or a Web application, you're going to need to know multiple different languages.

Eso To create a basic Web application, you'll need to know HTML.

You'll need to know CSS.

You're most likely need to know Java script, and you'll need to know what's called a server side scripting language, something like PHP or ruby on rails.

All of these languages together will then create your web application.

This is important thing to understand a lot of new people when they get in detecting technology world of coding world, They always want to know what language or want technology they need to know to be successful.

And what I keep trying to explain to people is not one language, right, basically for any of these types of things.

In order to actually create a product anybody can use, you probably need to know five different languages.

And when we're talking about creating a Web application again, you'll be dealing with a came out CSS Java script, most likely something like PHP or Ruby on rails.

To think about it, just you understand what's going on.

We're talking about html hypertext markup language you use as language basically to create the structure of the Web page that people are looking at eso.

If you're thinking about a building metaphor, let's say you're going to be building a building.

HTML would be the rafters for the building.

It would be the roof for the building will be the floors for the building will be the foundation for the building.

Basically, HTML is what would what makes your website look like a website and gives structure in order to put the other programming languages onto CSS, something called cascading style sheets.

Essentially, this is what makes your website of your Web application look pretty.

So it's It's what allows you to modify the fox change font color change font sizes?

Do that types of things put shapes put shapes on your Web page or when your Web application, where you're going to be placing things like icons and all that kind of stuff.

You'll be using something called cascading style sheet in order to do that.

Uh, when you think about JavaScript.

So Java script is what gives you the real time interactivity on a Web page or Web application.

So when you scroll over a menu when you get that automatic drop down that's actually being done by Java script, then you go to the back end programming languages that something like Python are something like python PHP ruby on rails on.

Basically, when you create a form in HTML when you hit the submit button, the information that form is then submitted to one of these other scripting language is that that then takes that information and does something such as puts it into a database or stores stores data on a server somewhere.

It was very important.

Understand, when you're thinking about building a Web page or Web application, you're going to be dealing with multiple languages.

Each one of these languages is used in order to complete a certain task on the task.

For HTML is basically just to give you the overall structure of the website that people are going to be interacting with so that you can then put CSS you and then put Java script.

You can then have that connect that back in programming language, toe, actually create something that is useful to the end user.

Now, I'm gonna have to put a warning in here.

I'm gonna have to put a warning warning.

Will Robinson.

If you're hanging around a lot of you know, a freshman in college kids freshman cops.

I folks be careful about calling html a programming language.

I have a video from like a decade ago, I called an introduction to HTML programming, and it's amazing.

10 years later, I'm still just getting blasted with people saying how ridiculous it is to call html programming language.

Don't you know that HTML isn't a programming language.

So if you're you're wondering what I'm talking about with this, basically, when you're dealing with html, html is something called a mark up language.

There's HTML.

There's exam l.

There are a lot of other markup.

Language is back in the day, and basically again, these markup language is essentially allow you to format documents that will be viewed through things like Web browsers.

It is important.

Understand, though, that HTML itself doesn't have any of the requirements of a really programming language.

Doesn't have functions it doesn't have.

If l statements, he doesn't have loops.

It doesn't have any of the things that are required in order to be a real programming language.

Why some of us old timers?

I guess a HTML programming is because HTML is so vital for creating Web applications that do use real programming languages, so Java script is a real programming language.

PHP, python, ruby on rails.

These are real programming languages.

Here's a thing you're going to use HTML forms to submit data to python, PHP or Ruby on rails, right?

You are going to create a Web page with HTML that will have Java script embedded in that Web page when you're going to look at a report.

So let's say you want to pull a report out of your Web application sales or something like that.

Python PHP Ruby on rails that back end that server language is going to pull the information and that it's actually going to be presented to the end user and a Web browser and basically will get printed out in HTML on that is going to be the website that end user is going to see.

And so it's kind of one of those things.

Just so you know, when people are losing their minds.

Diem Al isn't a programming language to be clear.

To be clear, HTML is not a programming language.

And if you ever get this, you ever get this question on the test say no.

It's not the reason a lot of old timers say things like HTML programming.

Is it so integral to creating an overall Web application that at the end of the day, it's kind of one of those things.

If you're worried about you know whether somebody calls html programming language, you don't have enough to dio eso again for me being an old timer in this doing technology since 1996 back in the late nineties, people used to just say, HTML programming is just what was said right again is not technically correct.

But at the end of the day, if you're arguing about it, if that's if that's all you have to argue about, you probably need to start studying and doing a little bit more.

So to really understand the power of HTML hypertext markup language, it is good.

Understand a little bit of the history that got us to actually have HTML back in the day.

One of things you have to understand.

So if you're if you're if you're young, especially if you're young or if you're new in the technology world, one of things you may not realize is back before HTML.

Whenever anybody or wrote a document using something like a word processor, there was no way most of the time to open that document in another word processor.

Basically, the only way to export a document of a word processor was literally to print it out, and then too, imported into another word processor, somebody had to sit there and basically type out what was written eso back in the days again when I was a kid during the eighties.

If you had something called Word Perfect if you had StarOffice word way back in the day.

Basically, if you type something up in word Perfect, the only way to read that document was to either print it out or literally open that document.

And we're perfect again.

Remember, back in the day, a piece of software like WordPerfect costs about $100 I was back in the 1980.

So nowadays I'll be two or $300.

And so one of the really issues there is if I wrote something on by simply wanted to to give that book or give that document to somebody else for them to be able to read, they had toe have the same word processing software to be able to open it up and simply even be able to read the document.

Obviously, this was a big problem.

S o.

The value of HTML was HTML was a way to code documents to be able to write documents and then tow have different vendors, be able, create browsers, their own browsers that were then able to open up those documents so that you could read a document using different people software.

So whether you had Netscape Navigator back in the day, whether you had Internet Explorer, whether you had fire Fox, whatever else, if somebody writes a document in HTML, that HTML document can be opened up in different vendors, Web browsers and people are actually able to read the document.

That was an incredibly valuable thing.

Now again, you know current current day.

That may seem like just something that's absolutely common in normal.

But again, you go back to the early nineties and there was a big problem.

Somebody wrote a document if you didn't have StarOffice cause I had a friend of mine.

His father, for some reason, bought star Office.

So he wrote all the stuff in Star Office.

Nobody could ever read his stuff because it was all in star office.

We all had word perfect, right, that that was a big problem.

Uh, the other valuable thing with HTML was again back in the day when you're dealing with word perfect.

A lot of these old word processors is there is no easy way to do things such as ad images, images, gifts, J pegs, especially not video or any of that kind of thing.

And so what HTML allowed people do, is they?

It allowed people to be able to create these multimedia documents.

So not only in the document could you have it written out in text, but you could have pictures again.

Macy may seem like who the hell cares now, 20 some years ago, having pictures like real pictures and documents was a big deal.

Also being able to do things such as below play videos or be able to play music or podcast again, having all of that embedded in one single document and then having other other vendors browsers be able to see and interpret that document was a very valuable thing.

So that's That's why HTML was valuable from a historical context on dhe, why it really took off and became important.

So now with that history, let's start explaining some of the problems that came from that history so that you understand some of the issues that you might be running into if you if you're developing an HTML and you're dealing with different Web browsers.

So one of the big problems in the technology world is whenever there is an open standard that comes out all the major vendors trying to re close that standard.

Basically, you know, you have these thieves, social justice people out there and they're like, OK, we're going to create a free, open standard that anybody can use And then all these major corporations come in.

Basically, they take the standard, and then they start adding their own weird little bits to then try to make it proprietary again.

We had this problem back in the mid to the late nineties, when you're dealing with HTML and when you're doing a live Web pages.

So when you're dealing with a female, basically, how you form at the document is using something called Tags.

We'll talk about this later.

H one tags P tags.

You know, image tags, that type of thing.

Well, one of the issues that we ran into in the nineties is many of these larger corporations.

They would start creating Web browsers on, and then they would have their Web browser be ableto understand certain tags that other Web browsers didn't understand.

So if you wanted.

If you want to text a blink.

Oh, thank golly it's over.

The nineties were horrible.

Web development in the nineties just made some of the worst, worst Web sites in the world.

But if you wanted your your your text to blink or if you wanted your text to scroll, if you're wanting your text or things to do, do specific things.

It was very interesting.

Was back in the day.

Netscape Navigator would use specific tags and order to allow those things to happen.

Internet Explorer would use a specific tags to let those things that happen.

And when Firefox came out fire, Fox would would understand specific tags.

And so you ran into a problem.

Were these different Web browsers would understand different tags.

And so that's why it was important whenever anybody was creating a Web application or a website that they would open the website and multiple different browsers to verify that the HTML that they had written would actually show up in each of the Web browsers the way that it was expected.

Not only that, but one of the problems is when you're thinking about formatting right.

Basically, when you format in HTML.

Again, you're just using these basic tags.

H one ties H two tags, 83 tags, Pete tags, that type of thing, right?

There's no additional format in basic h came out.

There's no or very little additional formatting that goes along with those tags.

And so basically, all that formatting is actually built on the Web browser itself.

So, again won.

The problems you can run into is you can have Netscape Navigator interpret and 81 tag differently.

Then how Internet Explorer would interpret in a nature won tak, which may be differently than how Firefox would interpret in h one tag And now how safari and how chrome and how all these different browsers may interpret in H one tag.

And so one of the things you have to be thinking about when you create a Web application or when you create a Web page is realize that when these different browsers are opening up the exact same HTML document, they may be interpreting that HTML document differently.

Based off of how, however, the Web browser was coded.

So this is a very important thing.

Now again in current time, modern modern times.

It's not nearly as significant as it was again in the mid nineties was really horribly.

It was so bad, literally certain browsers came up with their own tags, and things wouldn't work literally wouldn't work on other browsers.

That's not the same world that we're dealing with today.

But it is important to know that when you open up a Web the exact same Web page, whether it's if you open it up in safari whether you open up in chrome, Internet Explorer or whatever else, you may actually be looking at a document.

The end user may be looking at a document that looks slightly or even possibly significantly different, simply based on how that that that Web browser interprets the HTML that it's reading.

So that's something to be thinking about whenever gonna be creating Web pages or Web applications.