angular-cn/public/docs/_examples/attribute-directives/ts/app/app.component.html

<!-- #docregion -->
<!-- #docregion v2 -->
<h1>My First Attribute Directive</h1>

<h4>Pick a highlight color</h4>
<div>
  <input type="radio" name="colors" (click)="color='lightgreen'">Green
  <input type="radio" name="colors" (click)="color='yellow'">Yellow
  <input type="radio" name="colors" (click)="color='cyan'">Cyan
</div>
<!-- #docregion color -->
<p [myHighlight]="color">Highlight me!</p>
<!-- #enddocregion color -->
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<!-- #docregion defaultColor -->
<p [myHighlight]="color" defaultColor="violet">
  Highlight me too!
</p>
<!-- #enddocregion defaultColor -->
<!-- #enddocregion -->

<hr>
<p><i>Mouse over the following lines to see fixed highlights</i></p>

<p [myHighlight]="'yellow'">Highlighted in yellow</p>
<p myHighlight="orange">Highlighted in orange</p>