title: angular 5 , orderBy asc/desc
body: <p>Is there an option to change sorting by asc/desc in orderBy pipe?</p>
  
  <p>The array:</p>
  
  <pre><code>this.testArr = [{name: 'bbb', id: '1'}, {name: 'ccc', id: '2'}, {name: 'aaa', id: '0'}];
  </code></pre>
  
  <p>In HTML:</p>
  
  <pre><code>&lt;ul&gt;&lt;li *ngFor="let item of testArr | orderBy: 'id' : true"&gt;&lt;div&gt;{{item.id}}&lt;/div&gt;&lt;/li&gt;&lt;/ul&gt;
  </code></pre>
  
  <p>Replacing the 'true' to 'false'/'asc'/'desc' did not work.
  The required output should be: 0, 1, 2 and by the other parameter: 2, 1, 0.</p>
  
  <p>Thank you.</p>