p.
  <span class="location-badge">exported from <a href="/angular2/annotations">angular2/annotations</a></span>
  defined in <a href="https://github.com/angular/angular/tree/master/modules/angular2/src/core/annotations/di.js#L53">angular2/src/core/annotations/di.js (line 53)</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
  @Decorator({
    selector: `input'
  })
  class InputDecorator {
    constructor(@Attribute('type') type) {
      // type would be `text` in this example
    }
  }
  ```
  
.l-main-section
  h2 Members
  .l-sub-section
    h3 constructor

    
    pre.prettyprint
      code.
        (attributeName)

    

    :markdown
      




  .l-sub-section
    h3 attributeName

    

    :markdown
      





  .l-sub-section
    h3 token

    

    :markdown