title: Client side validation for "No Space Allowed" in input field
body: <p>In the following code I have given validation for required but its taking blank spaces also
  so I want validation for this line which will not allowed for not only space or not start with a space. Means it can take spaces with characters but not only blank space. </p>
  
  <pre><code>&lt;input type="text" required  placeholder="Lastname Firstname Middlename" id="fullname" name="fullname" class="textbox"&gt;
  </code></pre>
  
  <p>I wants to limit or restrict file upload size in bellow line of code want same client side restriction</p>
  
  <pre><code>&lt;input type="file" required  accept=".gif,.jpeg,.png" name="image" id="image"/&gt;
  </code></pre>