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
Specification | Status | Comment |
---|---|---|
HTML Living Standard customElements.get() |
Living Standard | Initial definition. |
浏览器兼容性
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