noscript 标签的 onclick 事件的目的是什么？

发布于 2024-08-07 23:22:28 字数 238 浏览 4 评论 0 原文

阅读http://www.w3schools.com/tags/tag_noscript.asp后感到困惑关于 noscript 标签上的 onclick 事件。

有人知道目的吗？

如果没有目的，他们为什么要保留它？

感谢您提前的任何答复。

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很快妥协 2024-08-14 23:22:28

引用 W3Schools 链接you提供的内容：

“根据 W3C 标准，

这不仅适用于 onclick，还适用于 ondblclick、onmousedown、onmousemove、onmouseout、onmouseover、onmouseup、onkeydown、onkeypress 和 onkeyup。

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戏舞 2024-08-14 23:22:28

DOM 0 事件被大多数 html 元素继承，我只是认为它们没有做任何事情来阻止 noscript 继承这些事件，而这些确实是无用的。我不建议完全出于此目的使用 w3schools 作为参考，因为它确实包含了不良做法，有时信息不准确、不清楚和/或令人困惑。

它拥有的#events：

<!ENTITY % events
 "onclick     %Script;       #IMPLIED  -- a pointer button was clicked --
  ondblclick  %Script;       #IMPLIED  -- a pointer button was double clicked--
  onmousedown %Script;       #IMPLIED  -- a pointer button was pressed down --
  onmouseup   %Script;       #IMPLIED  -- a pointer button was released --
  onmouseover %Script;       #IMPLIED  -- a pointer was moved onto --
  onmousemove %Script;       #IMPLIED  -- a pointer was moved within --
  onmouseout  %Script;       #IMPLIED  -- a pointer was moved away --
  onkeypress  %Script;       #IMPLIED  -- a key was pressed and released --
  onkeydown   %Script;       #IMPLIED  -- a key was pressed down --
  onkeyup     %Script;       #IMPLIED  -- a key was released --"
  >

The DOM 0 events are inherited by most html elements, I just don't think they did anything to prevent noscript from inheriting those, and those would be useless indeed. I would not recommend using w3schools as a reference exactly for this purpose, because it does incorporate bad practices and sometimes the information is inaccurate, unclear and/or confusing.

the #events it owns:

<!ENTITY % events
 "onclick     %Script;       #IMPLIED  -- a pointer button was clicked --
  ondblclick  %Script;       #IMPLIED  -- a pointer button was double clicked--
  onmousedown %Script;       #IMPLIED  -- a pointer button was pressed down --
  onmouseup   %Script;       #IMPLIED  -- a pointer button was released --
  onmouseover %Script;       #IMPLIED  -- a pointer was moved onto --
  onmousemove %Script;       #IMPLIED  -- a pointer was moved within --
  onmouseout  %Script;       #IMPLIED  -- a pointer was moved away --
  onkeypress  %Script;       #IMPLIED  -- a key was pressed and released --
  onkeydown   %Script;       #IMPLIED  -- a key was pressed down --
  onkeyup     %Script;       #IMPLIED  -- a key was released --"
  >