angular-cn/public/docs/js/latest/api/annotations/AttributeAnnotation-class.jade

99 lines
1.4 KiB
Plaintext

p.location-badge.
exported from <a href='../annotations'>angular2/annotations</a>
defined in <a href="https://github.com/angular/angular/tree/2.0.0-alpha.34/modules/angular2/src/core/annotations_impl/di.ts#L3-L44">angular2/src/core/annotations_impl/di.ts (line 3)</a>
:markdown
Specifies that a constant attribute value should be injected.
The directive can inject constant string literals of host element attributes.
## Example
Suppose we have an `<input>` element and want to know its `type`.
```html
<input type="text">
```
A decorator can inject string literal `text` like so:
```javascript
@Directive({
selector: `input'
})
class InputDirective {
constructor(@Attribute('type') type) {
// type would be `text` in this example
}
}
```
.l-main-section
h2 Annotations
.l-sub-section
h3.annotation CONST
pre.prettyprint
code.
@CONST()
.l-main-section
h2 Members
.l-sub-section
h3 constructor
pre.prettyprint
code.
constructor(attributeName: string)
:markdown
.l-sub-section
h3 attributeName
:markdown
.l-sub-section
h3 token
:markdown
.l-sub-section
h3 toString
pre.prettyprint
code.
toString()
:markdown