title: How to put a newline in a template string
body: <p>I have a template string where in I'm using an <code>array</code> like this:</p>
  
  <pre><code>var templateString = `array is ${arr.join(",\n")}`;
  </code></pre>
  
  <p>The newline doesn't show up. How can I put a newline in this case?</p>