Comments will be ignored by the browser.
You can use comments i.e. to make it easier to read your code for others when working in a team,
or to make it easier to understand what each part of the code does when trying to teach someone programming,
or for commenting out some parts of the code that didn't work as expected to fix them later.

Single line comments are done as follows:

   

If you have done it correctly your HTML document should look like this now:

   

The doctype declaration itself is not a HTML tag.
It's information for the browser on what kind of document to expect.
We can tell the browser to expect HTML5 like this:

   

Since the doctype declaration is not case sensitive other declarations are possible, too.
For example:

   

If you want to upload your HTML to a server and make sure that it works correctly
you should add a default charset and force the browser to make it responsible.
In order to do that we will add the following two lines in the head section of the HTML document:

   

If you have done it correctly your HTML document should look like this now:

   

To force the browser to strictly read your HTML document as HTML we have to add the following line to the code:

   

If you've done it correctly your HTML document should look like this now:

   

The basic layout of a HTML document looks like this:

   

If you save it as i.e. Index.html and open it in your browser it works.

Quote:puts "Please enter something here: "
var = gets.chomp
puts var

Quote:var = "Hello, World!"
puts var

Quote:puts "Hello, World!"

Quote:# This is
# a multi
# line comment

Quote:# This is a single line comment