HTML5中对title属性的定义与规定
注意,这里说的不是title标签(
总结:
元素的title属性的值就是该元素的咨询信息,并有可能适当的以提示框的形式显示出来。
title属性是纯文本形式的。
例如:超级连接的(标签)title属性可以设置成目标资源的简单描述
示例:
代码: 全选 运行
当一个元素没有设置title属性的时候,意味着该元素将受其最近一级设置有title属性的祖先元素的title属性值的影响。
当由一个元素任何祖先元素的title值都不能表达该元素的咨询信息时,你应该为它单独设置一个title值。
当一个元素没有咨询信息的时候,你可以把它设置成空字符串。
title标签可以用
(Unicode Character ‘LINE FEED (LF)’ (U+000A)的html表现形式)换行。
代码示例:
http://www.htmlv.cn" title="这是一个 不错的论坛">HTML5中文论坛
以上代码当鼠标悬在连接上的时候,title的提示框将以两行的形式显示(IE7下测试通过,Firefox下测试未通过)。
对于一些特殊的元素,诸如 link, abbr, 和 input这些元素,title属性有附加的含义,超出了以上的描述。
title的属性值应该与其的内容值相符。

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