# Hook Hooks allow for injecting functions that must all complete in order before finishing They will execute in parallel but all must finish before continuing Functions may return a promise if they are async. **Kind**: global class * [Hook](#Hook) * [new Hook(context)](#new_Hook_new) * [.register()](#Hook+register) * [.deregister()](#Hook+deregister) * [.trigger()](#Hook+trigger) ⇒ Array.<Promise> * [.list()](#Hook+list) ⇒ Array * [.clear()](#Hook+clear) ## new Hook(context) Constructor | Param | Type | Description | | --- | --- | --- | | context | any | scope of this | **Example** ```js this.content = new Hook(this); ``` ## hook.register() Adds a function to be run before a hook completes **Kind**: instance method of [Hook](#Hook) **Example** ```js this.content.register(() => {...}); ``` ## hook.deregister() Removes a function **Kind**: instance method of [Hook](#Hook) **Example** ```js this.content.deregister(() => {...}); ``` ## hook.trigger() ⇒ Array.<Promise> Triggers a hook to run all functions **Kind**: instance method of [Hook](#Hook) **Example** ```js this.content.trigger(args).then(() => {...}); ``` ## hook.list() ⇒ Array list **Kind**: instance method of [Hook](#Hook) ## hook.clear() clear **Kind**: instance method of [Hook](#Hook)