title: How to combine two variables in javascript with comma in between?
body: <p>I want to combine two variables using JavaScript.</p>
  
  <pre><code>var width = window.screen.width;
  var height = window.screen.height;
  </code></pre>
  
  <p>so it would have a var like</p>
  
  <pre><code>var width_height =
  </code></pre>
  
  <p>How would I combine both of them with one variable and have a output as example below</p>
  
  <pre><code>1600,900
  </code></pre>