我可以验证<选取框>吗？
有没有办法验证标签？我有两个具有 OnMouseOver 属性的元素，并且验证器也不验证它们。唯一的错误就是这些。所以如果你知道方法，请分享...
Is there a way to validate the tag? And I have two elements with OnMouseOver attribute, and the validator, too don't validate them. The only errors are these. So if you know a way, please share...
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无法验证
There is no way to validate the
<marquee>tag since it is not a standard html element. You will have to use JavaScript. Here is another SO question that might lead you in the right direction. Javascript Marquee to replace tags<选取框>？您是来自 90 年代末的时空旅行吗？好吧，笑话先放一边。
从技术上讲，您可以使用一些技巧，例如通过 JavaScript 动态生成此标签。还有更好的、可移植的和广泛接受的解决方法 - 不要使用它。看起来很糟糕。
<marquee>? Are you travelling in time and came from late 90's?OK, jokes aside.
<marquee>is not a standard HTML attribute, it was introduced by Microsoft and was never really adopted. Hence the HTML validator will obviously scream.Technically you can use tricks like generating this tag dynamically via JavaScript. There is also much better, portable and widely accepted workaround - don't use it. It looks terrible.
<marquee>is not a valid HTML tag. It won't validate.