title: Define variable when calling component
body: <p>I need to define a Date as an a @Input of a component:</p>
  
  <pre><code>&lt;progress [start]="new Date()"&gt;&lt;/progress&gt;
  </code></pre>
  
  <p>I get this error:</p>
  
  <blockquote>
    <p>Parser Error: Unexpected token 'Date' at column 5 in [new Date()]</p>
  </blockquote>
  
  <p>How to define a variable value when calling a component?</p>