HackMD
網頁到底是什麼
瀏覽網頁到底是什麼？
Image Not Showing
Possible Reasons
- The image file may be corrupted
- The server hosting the image is unavailable
- The image path is incorrect
- The image format is not supported
我們先來說一下在瀏覽網頁的時候，到底發生了什麼事？
當我們說我要瀏覽一個網頁的時候，實際上會從我們的瀏覽器發送一個 request（請求）到 server，然後 server 會去資料庫找出我們想要的網頁檔案傳回來。這就是最簡單的網路。
瀏覽器
Image Not Showing
Possible Reasons
- The image file may be corrupted
- The server hosting the image is unavailable
- The image path is incorrect
- The image format is not supported
1993 NCSA Mosaic
Image Not Showing
Possible Reasons
- The image file may be corrupted
- The server hosting the image is unavailable
- The image path is incorrect
- The image format is not supported
Image Not Showing
Possible Reasons
- The image file may be corrupted
- The server hosting the image is unavailable
- The image path is incorrect
- The image format is not supported
引用一段 wiki 上對 Mosaic 的描述讓大家感受一下 Mocaic 做了些什麼
它讓使用者透過點選介面在電子訊息世界中暢遊。Mosaic 激勵著使用者將他們的檔案上傳到網路上，包括彩色圖片、聲音片段、影片剪輯，此外超文字形式的『連結』能夠連結到其它檔案。隨著點選連結，這個連結上的檔案就能夠顯示出來，你可以通過這種突發奇想而又直覺的方式在網路世界中穿梭
Image Not Showing
Possible Reasons
- The image file may be corrupted
- The server hosting the image is unavailable
- The image path is incorrect
- The image format is not supported
Image Not Showing
Possible Reasons
- The image file may be corrupted
- The server hosting the image is unavailable
- The image path is incorrect
- The image format is not supported
Eric Bina (left) and Marc Andreessen (right)
What's the New
Image Not Showing
Possible Reasons
- The image file may be corrupted
- The server hosting the image is unavailable
- The image path is incorrect
- The image format is not supported
所以 HTML 到底是什麼？
- 英文全名是 Hypertext Markup Language 超文本標記語言
- 是一種語言，會對瀏覽器說明呈現這個網頁所需要的資訊
- 用的方式是使用各種 Markup（標籤） 進行說明
