title: regex with replace() for letters only
body: <p>I have a string that output</p>
  <pre><code>20153 Risk
  </code></pre>
  <p>What i am trying to achieve is getting only letters, i have achieved by getting only numbers using regular expression which is</p>
  <pre><code>const cf_regex_number = cf_input.replace(/\D/g, '');
  </code></pre>
  <p>this will return only <code>20153</code> . But as soon as i tried to only get letters , its returning the while string instead of <strong><code>Risk</code></strong> . i have done my research and the regular expression to get only letters is using <code>**/^[a-zA-Z]*$/**</code></p>
  <p>This is my line of code i tried to get only letters</p>
  <pre><code>const cf_regex_character = cf_input.replace(/^[a-zA-Z]*$/,'')
  </code></pre>
  <p>but instead of returning <strong><code>Risk</code></strong> , it is returning <strong>20153 Risk</strong> which is the whole line of string .</p>