css - "text-overflow: ellipsis"不是有效的 CSS 吗？

Question

此代码在运行 W3C CSS Validator 时触发错误:

p{
    text-overflow: ellipsis;
}

我得到:

Line     Code context      Error/Warning
2        p                 Parse Error [empty string]

这只是验证器中的错误还是我遗漏了一些非常明显的东西？

Answer 1

这是一个 bug in the CSS validator , 已经报道过了。 text-overflow:ellipsis是一个有效的规则，但是不幸的是 W3C CSS 验证器很容易出错(参见 bug list)。

但是，请注意当前的工作草案列出了一些 text-overflow值为 feature at risk :

The Working Group has identified the following features as at risk of being removed from CSS Basic User Interface Module Level 3 when exiting CR. Implementors are urged to implement these features, if they wish to see these features remain in this specification. All other features are either defined in a normative reference (e.g. CSS 2.1 [CSS21] or Selectors [SELECT]) or are believed to have two or more implementations, and thus will not be dropped without returning to last call.

• [...]
• text-overflow property value: <string>
• text-overflow property 2-value syntax and definition.

虽然这不会影响 ellipsis值，它可能是验证器中错误的来源:

Parse Error [empty string]

引用资料

• W3C:CSS 基本用户界面模块级别 3 (CSS3 UI):(WD-20120117)
  • Features at risk
  • 8.2. Overflow Ellipsis: the ‘text-overflow’ property