title: Validate White Space Strings
body: <p>I am using regular expression to see if a string is nothing like "" or all white space like "    "</p>
  
  <p>my regular expression is this:</p>
  
  <pre><code>/\s/
  </code></pre>
  
  <p>but is only working for when the input is nothing like "". How can I modify it to also check for all whitespace inputs like "    "</p>