title: JQuery to Angular-Typescript
body: <p>I have the below piece of code and am looking various ways to convert them in typescript, but could not find ways.
  please suggest how would i achieve this function</p>
  
  <pre><code>$('html').addClass('abc');
  $(".abc .wrap").css("height", hieght - 70); 
  </code></pre>
  
  <p>This is another sample.</p>
  
  <pre><code>$("#Box").css("index", "");
  $("#mID").css("index", "");
  </code></pre>
  
  <p>Please suggest how would i write them in Typescript.
  Angular 7</p>