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                            # 1.1 什么是Web

## 1.1 什么是Web

Web即**World Wide Web（WWW）**，它是世界上所有的**超文本（Hypertext）**、其他資源（如圖片）和它們之間的**超鏈接（Hyperlink）**的總和[1](#fn_1)；這些超文本和資源分布在全球的計算機網絡上，通常經**HTTP**協議來訪問。最常見的超文本就是HTML文本。超鏈接就是一個超文本中指向另一個超文本或者其他資源文件的鏈接。

下面這張概念圖展示了超文本、超鏈接和計算機網絡之間的關系：

![web-and-computer-networks.png](https://box.kancloud.cn/abc81d4a749e683ee41a1f72211afebf_800x663.png)

當你瀏覽器網頁的時候，瀏覽器通過HTTP協議獲取相應的HTML文本和其他資源。

> 1. 根據[https://en.wikipedia.org/wiki/World\_Wide\_Web](https://en.wikipedia.org/wiki/World_Wide_Web)：“...the World Wide Web is a global collection of text documents and other resources, linked by hyperlinks and URIs”。[?](#reffn_1 "Jump back to footnote [1] in the text.")
                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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