内容表

• 句法
• addListener syntax
• 浏览器兼容性
• 范例

contextualIdentities.onRemoved

Fired when a new contextual identity is removed. Contextual identities may be removed by extensions using the contextualIdentities API, or directly by the user, using the browser's user interface.

句法

browser.contextualIdentities.onRemoved.addListener(listener)
浏览器

.

contextualIdentities

.

onRemoved

.


removeListener


(

listener

)

浏览器

.

contextualIdentities

.

onRemoved

.


hasListener


(

listener

)


					

Events have three functions:

addListener(listener)

Adds a listener to this event.

removeListener(listener)

Stop listening to this event. The listener argument is the listener to remove.

hasListener(listener)

校验是否 listener is registered for this event. Returns true if it is listening, false 否则。

addListener syntax

参数

callback

Function that will be called when this event occurs. The function will be passed the following arguments:

changeInfo

对象 . An object that contains a single property, contextualIdentity , which is a contextualIdentities.ContextualIdentity object representing the identity that was removed.

浏览器兼容性

BCD tables only load in the browser

范例

function handleRemoved(changeInfo) {
  console.log(`Removed: ${changeInfo.contextualIdentity.name}`);
}
browser.contextualIdentities.onRemoved.addListener(handleRemoved);

						

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最后修改： Oct 26, 2021 , 由 MDN 贡献者

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