title: What does Angular 2 hashtags in template mean?
body: <p>I am working with angular 2 and I have found something like </p>
  
  <pre><code>&lt;input #searchBox (keyup)="search(searchBox.value)"
  </code></pre>
  
  <p>and it works. </p>
  
  <p>However, I don't understand the meaning of <strong>#searchBox</strong>. I haven't found anything clear neither in the doc.</p>
  
  <p>Could anyone explain to me how it works?</p>