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HTML character entity

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2019-09-25 15:53:132272browse

HTML 字符实体

HTML character entity

HTML 中的预留字符必须被替换为字符实体。

HTML 实体

在 HTML 中,某些字符是预留的。(推荐学习:HTML入门教程)

在 HTML 中不能使用小于号(),这是因为浏览器会误认为它们是标签。

如果希望正确地显示预留字符,我们必须在 HTML 源代码中使用字符实体(character entities)。

字符实体类似这样:

&entity_name;

或者

&#entity_number;

如需显示小于号,我们必须这样写:< 或 <

提示:使用实体名而不是数字的好处是,名称易于记忆。不过坏处是,浏览器也许并不支持所有实体名称(对实体数字的支持却很好)。

不间断空格(non-breaking space)

HTML 中的常用字符实体是不间断空格( )。

浏览器总是会截短 HTML 页面中的空格。如果您在文本中写 10 个空格,在显示该页面之前,浏览器会删除它们中的 9 个。如需在页面中增加空格的数量,您需要使用   字符实体。

HTML 中有用的字符实体

注释:实体名称对大小写敏感!

HTML character entity

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