1.6 KiB
@cheatsheetSection Directive and component change detection and lifecycle hooks @cheatsheetIndex 6 @description (implemented as class methods)
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constructor(myService: MyService, ...) { ... }|constructor(myService: MyService, ...)
The class constructor is called before any other lifecycle hook. Use it to inject dependencies, but avoid any serious work here.
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onChanges(changeRecord) { ... }|onChanges(changeRecord)
Called after every change to input properties and before processing content or child views.
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onInit() { ... }|onInit()
Called after the constructor, initializing input properties, and the first call to onChanges.
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doCheck() { ... }|doCheck()
Called every time that the input properties of a component or a directive are checked. Use it to extend change detection by performing a custom check.
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afterContentInit() { ... }|afterContentInit()
Called after onInit when the component's or directive's content has been initialized.
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afterContentChecked() { ... }|afterContentChecked()
Called after every check of the component's or directive's content.
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afterViewInit() { ... }|afterViewInit()
Called after afterContentInit when the component's view has been initialized. Applies to components only.
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afterViewChecked() { ... }|afterViewChecked()
Called after every check of the component's view. Applies to components only.
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onDestroy() { ... }|onDestroy()
Called once, before the instance is destroyed.