33 lines
654 B
Plaintext
33 lines
654 B
Plaintext
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p.
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<span class="location-badge">exported from <a href="/angular2/di_annotations">angular2/di_annotations</a></span>
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defined in <a href="https://github.com/angular/angular/tree/master/modules/angular2/src/di/annotations.js#L75">angular2/src/di/annotations.js (line 75)</a>
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:markdown
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A parameter annotation that marks a dependency as optional. (Injects `null` if not found.)
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```
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class AComponent {
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constructor(@Optional() aService:MyService) {
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this.aService = aService;
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}
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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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()
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:markdown
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