From 33058f2b292b3a581333bdfb21b8f671898c5060 Mon Sep 17 00:00:00 2001 From: Peter Bengtsson Date: Tue, 8 Dec 2020 14:40:17 -0500 Subject: initial commit --- .../web/api/customelementregistry/get/index.html | 72 ++++++++++++++++++++++ 1 file changed, 72 insertions(+) create mode 100644 files/zh-cn/web/api/customelementregistry/get/index.html (limited to 'files/zh-cn/web/api/customelementregistry/get') diff --git a/files/zh-cn/web/api/customelementregistry/get/index.html b/files/zh-cn/web/api/customelementregistry/get/index.html new file mode 100644 index 0000000000..5b6cb1b564 --- /dev/null +++ b/files/zh-cn/web/api/customelementregistry/get/index.html @@ -0,0 +1,72 @@ +--- +title: CustomElementRegistry.get() +slug: Web/API/CustomElementRegistry/get +tags: + - CustomElementRegistry + - Experimental + - Web Components + - custom elements +translation_of: Web/API/CustomElementRegistry/get +--- +

{{APIRef("CustomElementRegistry")}}

+ +

 {{domxref("CustomElementRegistry")}} 的get()方法返回以前定义自定义元素的构造函数.

+ +

语法

+ +
constructor = customElements.get(name);
+
+ +

参数

+ +
+
name
+
你想要返回引用的构造函数的自定义元素的名字。
+
+ +

返回值

+ +

指定名字的自定义元素的构造函数,如果没有使用该名称的自定义元素定义,则为undefined

+ +

例子

+ +
customElements.define('my-paragraph',
+  class extends HTMLElement {
+    constructor() {
+      super();
+      let template = document.getElementById('my-paragraph');
+      let templateContent = template.content;
+
+      const shadowRoot = this.attachShadow({mode: 'open'})
+        .appendChild(templateContent.cloneNode(true));
+  }
+})
+
+// Return a reference to the my-paragraph constructor
+let ctor = customElements.get('my-paragraph');
+
+ +

规范

+ + + + + + + + + + + + + + +
SpecificationStatusComment
{{SpecName("HTML WHATWG", "custom-elements.html#dom-customelementregistry-get", "customElements.get()")}}{{Spec2("HTML WHATWG")}}Initial definition.
+ +

浏览器兼容性

+ +
+ + +

{{Compat("api.CustomElementRegistry.get")}}

+
-- cgit v1.2.3-54-g00ecf