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HTML head標(biāo)簽用于定義HTML文檔的頭部，其中包含了一些元數(shù)據(jù)（metadata），即提供關(guān)于HTML文檔的信息，而不是顯示在頁面上的內(nèi)容。具體作用如下：

設(shè)置文檔的標(biāo)題：使用標(biāo)簽中的標(biāo)簽來定義文檔的標(biāo)題，標(biāo)題將顯示在瀏覽器的標(biāo)題欄或標(biāo)簽頁上。</p> </li> <li> <p>引入外部資源：可以在<head>標(biāo)簽中使用<link>標(biāo)簽引入外部樣式表（CSS文件），以及使用<script>標(biāo)簽引入外部JavaScript文件。</p> </li> <li> <p>定義字符集：可以使用<meta>標(biāo)簽定義文檔的字符集編碼，例如使用<meta charset="UTF-8">來指定文檔使用UTF-8編碼。</p> </li> <li> <p>設(shè)置視口：可以使用<meta>標(biāo)簽設(shè)置移動設(shè)備的視口，以確保頁面在移動設(shè)備上正確顯示。</p> </li> <li> <p>描述文檔內(nèi)容：可以使用<meta>標(biāo)簽的"description"屬性來提供對文檔內(nèi)容的描述，這對于搜索引擎優(yōu)化（SEO）非常有用。</p> </li> <li> <p>定義關(guān)鍵詞：可以使用<meta>標(biāo)簽的"keywords"屬性來定義文檔的關(guān)鍵詞，這也是用于SEO的一種方法。</p> </li> <li> <p>指定作者和版權(quán)信息：可以使用<meta>標(biāo)簽的"author"和"copyright"屬性來指定文檔的作者和版權(quán)信息。</p> </li> </ol> <p>總之，<head>標(biāo)簽是用來設(shè)置關(guān)于HTML文檔的元數(shù)據(jù)和其他信息的地方，這些信息通常不直接顯示在網(wǎng)頁內(nèi)容中，但對于網(wǎng)頁的正確渲染和優(yōu)化非常重要。</p> </p> </div> <p class="tj-wenzhang recommend-article"></p> <div id="u1cami7" class="zixun-tj-product adv-bottom"></div> <div id="6ar1lgp" class="user-estimate clearfix"> <div 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HTML head標(biāo)簽的作用是什么