title: javascript - blank space validation
body: <pre><code>function validation(reg) {
      str = document.reg;
      if (str.name.value == "") {
          alert("Enter your name");
          str.name.focus();
          return false;
      }
  </code></pre>
  
  <p>Validation will working fine if input is empty. </p>
  
  <p>Problem</p>
  
  <ol>
  <li>User can enter a blank space on the first.</li>
  <li>Also user can enter space only on the name.</li>
  </ol>
  
  <p>How to prevent it?</p>