Obsolete
This feature is obsolete. Although it may still work in some browsers, its use is discouraged since it could be removed at any time. Try to avoid using it.
The obsolete <element> was part of the Web Components specification; it was intended to be used to define new custom DOM elements. It was removed in favor of a JavaScript-driven approach for creating new custom elements; however, that technology is not mature and no browers fully implement it.
Note: This element has been removed from the specification. See this for more information from the editor of the specification.
| Content categories | Transparent content. |
|---|---|
| Permitted content | ??? |
| Tag omission | None, both the starting and ending tag are mandatory. |
| Permitted parent elements | ??? |
| DOM interface | HTMLElement |
This element includes the global attributes.
The <element> element was formerly in a draft specification of Custom Elements but it has been removed.
| Feature | Chrome | Edge | Firefox | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|---|
| Basic support | ? | No | No | No | ? | ? |
| Feature | Android webview | Chrome for Android | Edge mobile | Firefox for Android | IE mobile | Opera Android | iOS Safari |
|---|---|---|---|---|---|---|---|
| Basic support | ? | ? | No | No | No | ? | ? |
<content>, <shadow>, <slot>, and <template>
© 2005–2018 Mozilla Developer Network and individual contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/HTML/Element/element