为什么看不到HTML 5< dialog> ;? [英] Why can't I see HTML 5 <dialog>?
问题描述
这是我的Facelets文件:
Here is my Facelets file:
<!DOCTYPE html>
<html lang="en"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html">
<h:head>
<title>Simple JSF Facelets page</title>
</h:head>
<h:body>
Place your content here!
<dialog>
<dt>Sam</dt>
<dd>Knock, Knock.</dd>
<dt>Eric</dt>
<dd>Who's there?</dd>
<dt>Sam</dt>
<dd>Justin.</dd>
<dt>Eric</dt>
<dd>Justin who?</dd>
<dt>Sam</dt>
<dd>Justin time for dinner!</dd>
</dialog>
</h:body>
</html>
我在浏览器中看到的只是
What I see in the browser is only
将您的内容放在这里！
Place your content here!
当我检查该文件的源代码时，我看到的是chrome:
When I check the source for this file, I see in chrome:
<!DOCTYPE html>
<html lang="en"><head>
<title>Simple JSF Facelets page</title></head><body>
Place your content here!
<dialog>
<dt>Sam</dt>
<dd>Knock, Knock.</dd>
<dt>Eric</dt>
<dd>Who's there?</dd>
<dt>Sam</dt>
<dd>Justin.</dd>
<dt>Eric</dt>
<dd>Justin who?</dd>
<dt>Sam</dt>
<dd>Justin time for dinner!</dd>
</dialog>
<ul id="javax_faces_developmentstage_messages" title="Project Stage[Development]: Unhandled Messages"></ul></body>
</html>
因此，从源代码看，它应该是有效的html5文件?但是目前，我看不到应该在dialog标记中的内容吗?
So, from the source code, it looks like it should be a valid html5 file? But currently, I can't see the content that should be in the dialog tag?
推荐答案
我以前从未使用过dialog标签，但是在检查了Chrome中内置的DOM和样式之后，似乎默认情况下该元素设置为display: none;
I have never used the dialog tab before, but after inspecting the DOM and styles built into Chrome, it seems as though by default the element is set to display: none;
dialog:not([open]){ display: none; }
因此要在您的页面上显示此内容，您需要设置样式；
So to display this on your page, you will need to set the style;
dialog{ display: block; }
更新
此外，您可以在dialog元素上使用open属性
Also, you can use the open attribute on the dialog element
<dialog open>....</dialog>
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