CallbacksInvoker Class

Defined in: https://github.com/cocos-creator/engine/blob/a2f4b48f64e8117cf0d5a93229bfe31932c42384/cocos2d/core/platform/callbacks-invoker.js:158

Module: cc Parent Module: cc

The callbacks invoker to handle and invoke callbacks by key.

Index

Methods

• hasEventListener Check if the specified key has any registered callback.
• removeAll Removes all callbacks registered in a certain event type or all callbacks registered with a certain target
• off
• emit Trigger an event directly with the event name and necessary arguments.

Details

Methods

hasEventListener

Check if the specified key has any registered callback. If a callback is also specified, it will only return true if the callback is registered.

Parameters

• key String
• callback Function
• target Object

removeAll

Removes all callbacks registered in a certain event type or all callbacks registered with a certain target

Parameters

• keyOrTarget String | Object The event key to be removed or the target to be removed

off

Parameters

• key String
• callback Function
• target Object

emit

Trigger an event directly with the event name and necessary arguments.

Parameters

• key String event type
• arg1 Any First argument
• arg2 Any Second argument
• arg3 Any Third argument
• arg4 Any Fourth argument
• arg5 Any Fifth argument

Examples

eventTarget.emit('fire', event);
eventTarget.emit('fire', message, emitter);