Introducing URLs - Web Development Udacity Japanese English

Introducing URLs - Web DevelopmentYouTube↗ IA↗(long shot)
Education 7.1K views 21 likes 0 dislikes 23 Feb 2015

Udacity 651K subscribers United States YouTube↗

次は誰もが必ず見たことのあるURLについてです

Let's talk about URLs. undoubtedly, you've seen

URLはUniform Resource Locatorの略です

URLs before. URL stands for Uniform Resource Locator.

URLとは例えばこのようなものです

An example of URL would be as follows. This is an example of URL. It's

主に3つのパートに分かれていますまずプロトコルがありコロンと2つのスラッシュの次に

got three main parts. It's got the protocol, separated by a column and two

後ろにパスを伴ったホストがありますこの場合のパスはスラッシュのみです

slashes from the host. Which precedes the path and in this case the path is just

最小のパスがスラッシュなので

a slash and if we didn't have that slash there the

何もついていなくてもスラッシュがパスとなります

path would still be a slash because that's the, the minimum path.

プロトコルには何種類もありますが

Now, the protocol can be a number of things but for

このレッスンではhttpとしておきましょう

our purposes it's going to be http almost all the time. We will

httpsというプロトコルも見たことがあると思いますし

also see https from time to time. And you'll see other

Web上にはこのほかにもftpなどもあります

protocols around the web. You might see ftp or you know, things,

ですがこのコースでは基本的に

things like that, but http basically means, you know, the web.

httpがWebを表しているものとします

That's, that's what we're going to be learning in this class. The host,

ホストはサーバのドメイン名で

this is the host name or domain name of the, of

アクセスしたい文書の場所を表しています

the server that has the document we want to access. This

ホストはIPアドレスであることもあります

can also be an IP address. This host just of course,

ホストはドメイン名をIPアドレスに変換して

translates into an IP address, and this is the. You know, the

取得したい文書を保有しているコンピュータの居場所を突き止めています

description of the location of the physical machine that has the

そしてパスは取り出す文書を表します

document we want to fetch. And the path is the document

パスはもっと複雑な場合もあります

we're going to fetch. Now, the path can be more complicated.

この部分全体が先ほどレッスンで使った

So the path would be this whole thing if we were accessing

画像へのパスになります

the image we were using in the previous part of the lecture.

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