Need to display alert message using Angular4 after clicking a checkbox

I am new to Angular 4 framework. I need to show an alert message or pop up on clicking a checkbox. I am not getting any proper answer how to do it.

below is the html snippet which I need to click

<td width="15%">
            <p-checkbox value ="Active" label="Active" [(ngModel)]="status">
 </p-checkbox>
</td>

what I need to add component or any other ts? Please help.