title: Get a value from mdInput
body: <p>So I have a <code>md-input</code> and some button.</p>
  
  <pre><code>&lt;md-input-container &gt;
     &lt;input mdInput #myInput name="myInput" type="password" placeholder="Yeah"&gt;
  &lt;/md-input-container&gt;
  &lt;button md-raised-button (click)="authenticate(myInput)"&gt;Start&lt;/button&gt;
  </code></pre>
  
  <p>This button sends the whole <code>md-input</code>. I fill in my input and that's what I'm getting when I click the button</p>
  
  <pre><code>&lt;input _ngcontent-uqn-44="" mdinput="" name="myInput" placeholder="Yeah" type="password" ng-reflect-placeholder="Yeah" ng-reflect-type="password" class="mat-input-element" ng-reflect-id="md-input-1" id="md-input-1" aria-describedby=""&gt;
  </code></pre>
  
  <p>I don't see any property/attribute which contains the value I pasted in Input. So how could I get the value?  Like <code>myInput.value</code>?</p>