今天刚看到HTML 5 标签的存在:
http://www.w3school.com.cn/html5/html5_eventsource.asp
可能1:这个信息是错误的;
可能2:规范仅规定了自定义标签(组件技术)是有短横线的,却没说原生标签一定不能有短横线;
可能3:规范禁止这样,同时规范又规定了一个违背规范的标签。
如果是3,那么进一步的问题是:还有多少此类型的例外标签需要在设计类库时加以留意?
回复内容:
http://w3schools.com 的内容只能作为参考。何况你看的是版权不明且早已缺乏维护的 http://w3school.com.cn 。event-source元素是html5早期草案(2008年)里的,在2009年初就去掉了短横线变为了 eventsource 元素,并且在几个月后废弃标签,直接变为了 EventSource 接口(JS构造器)。这些信息你在w3c官方网站都是可以找到的。

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