title: HTML attribute not passing through to html from Typescript
body: <p>I'm sending this from Typescript </p>
  
  <pre><code>this.equationList = "&lt;span id=\"Weight2\" class=\"weight\"&gt;W&lt;/span&gt; = mg";
  </code></pre>
  
  <p>to HTML</p>
  
  <pre><code>&lt;div [innerHTML]="equationList"&gt;&lt;/div&gt;
  </code></pre>
  
  <p>All I get when I look at the element in the inspector is</p>
  
  <pre><code>&lt;span class="weight"&gt;W&lt;/span&gt; = mg
  </code></pre>
  
  <p>id="Weight2" doesn't make it through.  I've tried sending other attributes in the span.  Only class="weight" makes it through.</p>