title: Angular 2 check radio button by default
body: <p>I am trying to check my radio button with zero value by default. I am trying to use the <code>[checked]='true'</code> attribute. But that does not work.</p>
  
  <pre><code>&lt;input type="radio" name="unitTrusts-pnl" id="unitTrusts-pnl0" class="with-gap" [value]="0" [(ngModel)]="unitTrustsPnl"  [checked]='true'&gt;
  &lt;input type="radio" name="unitTrusts-pnl" id="unitTrusts-pnl0" class="with-gap" [value]="1" [(ngModel)]="unitTrustsPnl"&gt;
  </code></pre>
  
  <p><strong>DEMO</strong></p>
  
  <p><a href="https://stackblitz.com/edit/angular-jj9gib" rel="noreferrer">https://stackblitz.com/edit/angular-jj9gib</a></p>