49 lines
1.6 KiB
Markdown
49 lines
1.6 KiB
Markdown
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@cheatsheetSection
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Directive and component change detection and lifecycle hooks
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@cheatsheetIndex 6
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@description
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(implemented as class methods)
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@cheatsheetItem
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`constructor(myService: MyService, ...) { ... }`|`constructor(myService: MyService, ...)`
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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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@cheatsheetItem
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`onChanges(changeRecord) { ... }`|`onChanges(changeRecord)`
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Called after every change to input properties and before processing content or child views.
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@cheatsheetItem
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`onInit() { ... }`|`onInit()`
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Called after the constructor, initializing input properties, and the first call to onChanges.
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@cheatsheetItem
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`doCheck() { ... }`|`doCheck()`
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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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@cheatsheetItem
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`afterContentInit() { ... }`|`afterContentInit()`
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Called after onInit when the component's or directive's content has been initialized.
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@cheatsheetItem
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`afterContentChecked() { ... }`|`afterContentChecked()`
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Called after every check of the component's or directive's content.
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@cheatsheetItem
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`afterViewInit() { ... }`|`afterViewInit()`
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Called after onContentInit when the component's view has been initialized. Applies to components only.
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@cheatsheetItem
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`afterViewChecked() { ... }`|`afterViewChecked()`
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Called after every check of the component's view. Applies to components only.
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@cheatsheetItem
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`onDestroy() { ... }`|`onDestroy()`
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Called once, before the instance is destroyed.
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