title: Remove all occurances of class in angular 2 +
body: <p>I have just started coding in angular5 and I came across need of removing all class occurances on click event.
  Something like below we have in Jquery</p>
  
  <pre><code>$('.m-active').removeClass('m-active');
  </code></pre>
  
  <p>I am looking for alternative of this in angular2 + (Typescript)</p>