title: How to set radio button checked in Angular 2
body: <p>I am new to Angular 2.</p>
  
  <p>I have a list and iterate it and display as radio buttons as shown below.  Now I want to set the check property if condition is TRUE.  How to do that in Angular 2?</p>
  
  <pre><code>      &lt;table *ngIf="optionList"&gt;  
          &lt;tr *ngFor="let op of optionList; let i = index"&gt;
            &lt;td&gt;
                &lt;input type="radio" name="optradio" *ngIf=" (CONDITION HERE) ? 'checked' : 'non' "&gt; 
                &lt;label&gt;{{op.option_text}} &lt;/label&gt; 
            &lt;td&gt;
          &lt;/tr&gt;
        &lt;/table&gt;
  </code></pre>