Exposes a set of functions in the global namespace which are useful for debugging the current state of your application. These functions are exposed via the global
ng "namespace" variable automatically when you import from
@angular/core and run your application in development mode. These functions are not exposed when the application runs in a production mode.
Entry point exports
Marks a component for check (in case of OnPush components) and synchronously performs change detection on the application this component belongs to.
检索与给定 DOM 元素关联的组件实例。
Retrieves the component instance associated with a given DOM element.
If inside an embedded view (e.g.
Returns the debug (partial) metadata for a particular directive or component instance. The function accepts an instance of a directive or component and returns the corresponding metadata.
检索与给定 DOM 元素关联的指令实例。不包括组件实例。
Retrieves directive instances associated with a given DOM node. Does not include component instances.
检索组件或指令实例的宿主元素。 宿主元素是与指令的选择器匹配的 DOM 元素。
Retrieves the host element of a component or directive instance. The host element is the DOM element that matched the selector of the directive.
检索与 DOM 元素关联的事件监听器的列表。该列表包含宿主监听器，但不包含在 Angular 上下文之外定义的事件监听器（例如，通过
Retrieves a list of event listeners associated with a DOM element. The list does include host listeners, but it does not include event listeners defined outside of the Angular context (e.g. through
检索其视图中包含此 DOM 元素的组件实例。
Retrieves the component instance whose view contains the DOM element.
检索与 DOM 元素，指令或组件实例关联的所有根组件。根组件是由 Angular 引导启动的组件。
Retrieves all root components associated with a DOM element, directive or component instance. Root components are those which have been bootstrapped by Angular.
Partial metadata for a given component instance. This information might be useful for debugging purposes or tooling. Currently the following fields are available:
Partial metadata for a given directive instance. This information might be useful for debugging purposes or tooling. Currently only
Event listener configuration returned from