[quote=TagYourIT]how do you mean im not learning java from w3 the scripts that i see over there are jave scripts right? and java script equels html or not thats a question as well[/quote]
No, you are not learning Java. You are Learning Javascript, they are two completely different languages. For reference, here are two hello world programs in these languages:
Javascript:
console.log("Hello World");
Java:
public class HelloWord {
public static void main(String[] args) {
System.out.println("Hello world");
}
}
As you can see, the syntax looks a bit similar, but that’s about where the similitude stop.
Of course HTML and JavaScript are two different things!
I will try and make it very simple to explain how the web languages work together:
HTML tells the browser how the page is structured: the title of the page is Foo, there is a heading containing the text bar, and then a paragraph, etc..
CSS tells the browser what the title, heading, paragraphs and others should look like, for example the color to use. Since it is mostly esthetics, you rarely need it to do security.
JavaScript tells the browser what to do when the paragraph is clicked, for example. While the first 2 are not programming languages, it is one: it is Turing complete, meaning that it can be used to implement any algorithm, which is not the case of HTML and CSS.
PHP is also a programming language, it is used to tell the server what to send to the client.
SQL is a query language, not a programming language. It is used by the server to gather the data needed by PHP to generate the page from the database.
So, when you visit a page, this is what basically what happens:
[list=1]
[] Your browsers asks the web server for a page.
[] The web server executes the PHP script associated with the page to generate it. If additional data is needed from a database, it will request it with SQL.
[]The web server sends the newly generated HTML document of the page back to your browser
[] Your browser reads the HTML and understands how the page is constructed. By doing so, it may encounter CSS or JavaScript code EMBEDDED in the HTML document. If so, it will parse it, as CSS or JavaScript.
[] Your browser displays the page by using the information it got from HTML and CSS.
[] JavaScript code is executed by your browser when necessary.
[/list]
So when you press CTRL+U to view the page source code, what you see is a mix of HTML, CSS and JavaScript in the form of an HTML document.
[quote=TagYourIT] and is it normal that every source code is seen by this on every website or not?[/quote]
Sorry, but I don’t understand your question.
[quote=TagYourIT] browser developer tool, f12 , didn’t work …. and what can i do whith it ?[/quote]
It is strange that F12 doesn’t work for you, what browser are you using?
Developer tools are very powerful, but it’s hard to explain you what it does if you don’t know anything about how a website works. Play with it on your side, it will teach you a lot.
[quote=TagYourIT]your saying asc atribute (a source code atrubute?) what do you mean by that? […]
and therefore learn a bit about networking : what do you suggest ?
[/quote]
I would suggest you start by learning the basis of HTML first, then you will understand what tag attributes are. There is no point to learn networking if you don’t know how HTML work, it is pretty much the base of the web.
[quote=TagYourIT]WHGhost thanks for the response and i like your name[/quote] You are welcome and thank you.
Please try to make less typing errors. Most of us out there does are not fluent in English and this small details make it even harder for us to understand your posts.
