Attribute

Parameter decorator for a directive constructor that designates a host-element attribute whose value is injected as a constant string literal.

Option	Description
attributeName	The name of the attribute whose value can be injected.

Options

attributeName
The name of the attribute whose value can be injected.
attributeName: string

Usage notes

Suppose we have an <input> element and want to know its type.

<input type="text">

The following example uses the decorator to inject the string literal text.

@Directive({selector: 'input'})
class InputAttrDirective {
  constructor(@Attribute('type') type: string) {
    // type would be 'text' in this example
  }
}

Example as TypeScript Decorator

@Component({selector: 'page', template: 'Title: {{title}}'})
class Page {
  title: string;
  constructor(@Attribute('title') title: string) { this.title = title; }
}