65 lines
1.9 KiB
Plaintext
65 lines
1.9 KiB
Plaintext
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p.location-badge.
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exported from <a href="/angular2/change_detection.html">angular2/change_detection</a>
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defined in <a href="https://github.com/angular/angular/tree/master/modules/angular2/src/core/life_cycle/life_cycle.js#L31">angular2/src/core/life_cycle/life_cycle.js (line 31)</a>
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:markdown
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Provides access to explicitly trigger change detection in an application.
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By default, `Zone` triggers change detection in Angular on each virtual machine (VM) turn. When testing, or in some
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limited application use cases, a developer can also trigger change detection with the `lifecycle.tick()` method.
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Each Angular application has a single `LifeCycle` instance.
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# Example
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This is a contrived example, since the bootstrap automatically runs inside of the `Zone`, which invokes
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`lifecycle.tick()` on your behalf.
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```javascript
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bootstrap(MyApp).then((ref:ComponentRef) => {
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var lifeCycle = ref.injector.get(LifeCycle);
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var myApp = ref.instance;
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ref.doSomething();
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lifecycle.tick();
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});
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```
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.l-main-section
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h2 Members
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.l-sub-section
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h3 constructor
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pre.prettyprint
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code.
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constructor(exceptionHandler:ExceptionHandler, changeDetector:ChangeDetector = null, enforceNoNewChanges:boolean = false)
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:markdown
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.l-sub-section
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h3 tick
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pre.prettyprint
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code.
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tick()
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:markdown
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Invoke this method to explicitly process change detection and its side-effects.
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In development mode, `tick()` also performs a second change detection cycle to ensure that no further
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changes are detected. If additional changes are picked up during this second cycle, bindings in the app have
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side-effects that cannot be resolved in a single change detection pass. In this case, Angular throws an error,
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since an Angular application can only have one change detection pass during which all change detection must
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complete.
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