title: Remove an underscore with Regex in JavaScript
body: <p>Like the title says, i would like to remove an underscore within a String with a regex. This is what i have: </p>
  
  <pre><code>  function palindrome(str) {
  
       str = str.toLowerCase().replace(/[^a-zA-Z]/g, '',/\s/g, '',/[0-9]/g,'');  
          if (str.split("").reverse().join("") !== str) {
             return false;
          }
          else {
             return true;
          }
     }
  palindrome("eye");
  </code></pre>