Attribute

Attribute (标签属性)用于拓展 HTML for paragraph. Note that the end tag's name is preceded by a slash character, "</p>", and that in empty elements the end tag is neither required nor allowed. If attributes are not mentioned, default values are used in each case.">tag,可改变标签行为或提供元数据,属性总是以name = value的格式(属性的识别码后接与之相关的值)

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