在此页

• 特性
• 方法
• 事件
• 范例
• 规范
• 浏览器兼容性
• 相关话题

HTMLSlotElement 接口在 Shadow DOM API enables access to the name and assigned nodes of an HTML <slot> 元素。

特性

HTMLSlotElement.name

DOMString : Can be used to get and set the slot's name.

方法

HTMLSlotElement.assignedNodes()

Returns a sequence of the nodes assigned to this slot, and if the flatten option is set to true , the assigned nodes of any other slots that are descendants of this slot. If no assigned nodes are found, it returns the slot's fallback content.

HTMLSlotElement.assignedElements()

Returns a sequence of the elements assigned to this slot (and no other nodes). If the flatten option is set to true , it also returns the assigned elements of any other slots that are descendants of this slot. If no assigned nodes are found, it returns the slot's fallback content.

事件

slotchange

Fired on an HTMLSlotElement instance ( <slot> element) when the node(s) contained in that slot change.

范例

The following snippet is taken from our slotchange example ( see it live also ).

let slots = this.shadowRoot.querySelectorAll('slot');
slots[1].addEventListener('slotchange', function(e) {
  let nodes = slots[1].assignedNodes();
  console.log('Element in Slot "' + slots[1].name + '" changed to "' + nodes[0].outerHTML + '".');
});
					

Here we grab references to all the slots, then add a slotchange event listener to the 2nd slot in the template — which is the one that keeps having its contents changed in the example.

Every time the element inserted in the slot changes, we log a report to the console saying which slot has changed, and what the new node inside the slot is.

规范

规范	状态	注释
HTML 实时标准 The definition of 'HTMLSlotElement' in that specification.	实时标准

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
HTMLSlotElement	Chrome 53	Edge 79	Firefox 63 63 不支持 59 — 63 Disabled Disabled From version 59 until version 63 (exclusive): this feature is behind the dom.webcomponents.shadowdom.enabled preference (needs to be set to true ). To change preferences in Firefox, visit about:config. 不支持 ? — 59 Disabled Disabled 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 40	Safari 10.1	WebView Android 53	Chrome Android 53	Firefox Android 63 63 不支持 59 — 63 Disabled Disabled From version 59 until version 63 (exclusive): this feature is behind the dom.webcomponents.shadowdom.enabled preference (needs to be set to true ). To change preferences in Firefox, visit about:config. 不支持 ? — 59 Disabled Disabled 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 41	Safari iOS 10.3	Samsung Internet Android 6.0
assignedElements	Chrome 65	Edge 79	Firefox 66	IE No	Opera Yes	Safari ?	WebView Android 65	Chrome Android 65	Firefox Android 66	Opera Android Yes	Safari iOS ?	Samsung Internet Android 9.0
assignedNodes	Chrome 53	Edge 79	Firefox 63 63 不支持 59 — 63 Disabled Disabled From version 59 until version 63 (exclusive): this feature is behind the dom.webcomponents.shadowdom.enabled preference (needs to be set to true ). To change preferences in Firefox, visit about:config. 不支持 ? — 59 Disabled Disabled 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 40	Safari 10.1	WebView Android 53	Chrome Android 53	Firefox Android 63 63 不支持 59 — 63 Disabled Disabled From version 59 until version 63 (exclusive): this feature is behind the dom.webcomponents.shadowdom.enabled preference (needs to be set to true ). To change preferences in Firefox, visit about:config. 不支持 ? — 59 Disabled Disabled 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 41	Safari iOS 10.3	Samsung Internet Android 6.0
名称	Chrome 53	Edge 79	Firefox 63 63 不支持 59 — 63 Disabled Disabled From version 59 until version 63 (exclusive): this feature is behind the dom.webcomponents.shadowdom.enabled preference (needs to be set to true ). To change preferences in Firefox, visit about:config. 不支持 ? — 59 Disabled Disabled 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 40	Safari 10.1	WebView Android 53	Chrome Android 53	Firefox Android 63 63 不支持 59 — 63 Disabled Disabled From version 59 until version 63 (exclusive): this feature is behind the dom.webcomponents.shadowdom.enabled preference (needs to be set to true ). To change preferences in Firefox, visit about:config. 不支持 ? — 59 Disabled Disabled 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 41	Safari iOS 10.3	Samsung Internet Android 6.0
slotchange event	Chrome 53	Edge 79	Firefox 63 63 不支持 59 — 63 Disabled Disabled From version 59 until version 63 (exclusive): this feature is behind the dom.webcomponents.shadowdom.enabled preference (needs to be set to true ). To change preferences in Firefox, visit about:config. 不支持 ? — 59 Disabled Disabled 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 40	Safari 10.1	WebView Android 53	Chrome Android 53	Firefox Android 63 63 不支持 59 — 63 Disabled Disabled From version 59 until version 63 (exclusive): this feature is behind the dom.webcomponents.shadowdom.enabled preference (needs to be set to true ). To change preferences in Firefox, visit about:config. 不支持 ? — 59 Disabled Disabled 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 41	Safari iOS 10.3	Samsung Internet Android 6.0

图例

完整支持

完整支持

不支持

不支持

兼容性未知 ?

兼容性未知

实验。期望将来行为有所改变。

实验。期望将来行为有所改变。

用户必须明确启用此特征。

用户必须明确启用此特征。

元数据

• 最后修改： Apr 8, 2019

相关话题

1. HTMLSlotElement
2. 特性

   1. 名称
3. 方法

   1. assignedElements()
   2. assignedNodes()
4. 事件

   1. slotchange
5. Web 组件相关页面

   1. CustomElementRegistry
   2. Document.createElement()
   3. DocumentOrShadowRoot
   4. Element.attachShadow()
   5. Element.shadowRoot
   6. Element.slot
   7. Event.composed
   8. Event.composedPath
   9. HTMLTemplateElement
   10. Node.getRootNode()
   11. Node.isConnected
   12. ShadowRoot
   13. Slotable
   14. Window.customElements