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Sir Tim Berners-Lee invented the World Wide Web in 1989. In his pursuit, he standardized many of the processes needed to make computers talk to each other. Uniform Resource Locators, or URLs, are one of those processes.
Example of a full URL: http://www.nytimes.com/2015/03/07/business/economy/jobs-report-unemployment-february.html
Example of a clean URL: nytimes.com
Fun Fact: The word "hypertext" was invented by Ted Nelson the early 1960s.
As you saw in the last video, URL's,
domain names, IP addresses and
0:00
DNS are all quite closely tied to one
another.
0:04
But because there's so many interesting
things about each one,
0:08
every video in this stage will go over
each in more detail.
0:11
Let's start with URL's and the man who
invented them, Sir Tim Burners-Lee.
0:15
Sir Tim Berners-Lee invented the world
wide web in 1989.
0:18
In his pursuit, he standardized many of
the processes needed to make
0:23
computers talk to each other.
0:28
Uniform resource locators, or URLs are one
of those processes.
0:30
One of the most wonderful parts of the web
is how everything is connected.
0:37
Web pages are connected using what's
called hyperlinks.
0:41
And behind every hyperlink is a URL.
0:45
Hyperlinks often look like the blue,
underlined words on the page.
0:48
But they can also look like a lot of
things these days, such as images or
0:53
buttons.
0:57
For example,
0:59
here on the YouTube page, Hyperlinks look
like the titles of the videos.
1:00
When you click on one of these links,
1:06
your computer takes this URL to get a copy
of the next webpage you request.
1:09
If the URL starts with http, the protocol
used for the web,
1:15
the next bit in the URL, after the colon
and two slashes, is the domain name.
1:20
Like teamtreehouse.com.
1:25
Any information after the domain name
describes the full path to the resource.
1:28
However, more and more URLs have become
shorter and shorter.
1:33
Nowadays, nearly everything is omitted in
the address bar, including the http://,
1:37
the port number, and the full path to the
resource.
1:43
The omission of all these details are
called clean URLs.
1:48
But don't be deceived.
1:51
Just because you can't see these details,
doesn't mean they're not there.
1:53
The one detail that's always left is the
domain name, like teamtreehouse.com.
1:57
While this domain name will help users
find resources on the web,
2:03
computers don't use names to find things.
2:07
They use numbers, and the numbers are
called IP addresses.
2:09
Now that you're familiar with the parts of
a URL, let's break down a few of those
2:14
parts in the next video, when we talk
about domain names and IP addresses.
2:18
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