Document.registerElement()

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弃用
This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. Avoid using it, and update existing code if possible; see the 兼容性表格 at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.

警告： document.registerElement() is deprecated in favor of customElements.define() .

草案
此页面不完整。

document.registerElement() method registers a new custom element in the browser and returns a constructor for the new element.

注意： This is an experimental technology. The browser you use it in must support Web Components. See Enabling Web Components in Firefox .

句法

var constructor = document.registerElement(tag-name, options);

参数

tag-name: The name of the custom element. The name must contain a dash (-), for example my-tag .
选项可选

范例

Here is a very simple example:

var Mytag = document.registerElement('my-tag');

Now the new tag is registered in the browser. The Mytag variable holds a constructor that you can use to create a my-tag element in the document as follows:

document.body.appendChild(new Mytag());

This inserts an empty my-tag element that will be visible if you use the browser's developer tools. It will not be visible if you use the browser's view source capability. And it won't be visible in the browser unless you add some content to the tag. Here is one way to add content to the new tag:

var mytag = document.getElementsByTagName("my-tag")[0];
mytag.textContent = "I am a my-tag element.";

浏览器兼容性

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. 更新 GitHub 上的兼容性数据

	桌面						移动
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`registerElement` 弃用非标	Chrome 35 — 80	Edge 79 — 80	Firefox 31 — 59 Disabled 不支持 31 — 59 Disabled Disabled From version 31 until version 59 (exclusive): this feature is behind the `dom.webcomponents.enabled` preference (needs to be set to `true` ) 和 preference (needs to be set to ). To change preferences in Firefox, visit about:config.	IE No	Opera 25 — 67	Safari No	WebView Android 37 — 80	Chrome Android 35 — 80	Firefox Android 31 — 59 Disabled 不支持 31 — 59 Disabled Disabled From version 31 until version 59 (exclusive): this feature is behind the `dom.webcomponents.enabled` preference (needs to be set to `true` ) 和 preference (needs to be set to ). To change preferences in Firefox, visit about:config.	Opera Android 25	Safari iOS No	Samsung Internet Android 3.0

图例

完整支持
不支持
非标。预期跨浏览器支持较差。
弃用。不要用于新网站。
用户必须明确启用此特征。

另请参阅

Custom Elements

元数据

最后修改： Mar 18, 2019

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句法

参数

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浏览器兼容性

图例

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