title: how to remove "," from a string in javascript
body: <p>original string is <code>"a,d,k"</code>
  I want to remove all <code>,</code> and make it to <code>"adk"</code>. </p>
  
  <p>I tried code below but it doesn't work.</p>
  
  <pre><code>"a,d,k".replace(/,/,"")
  </code></pre>