title: all input field validation through single/minimum line on code with jQuery
body: <p>I have a form in which I have 30 input boxes and 10 text areas and 3 select boxes (<strong>updated</strong>)  field and all are mandatory fields.</p>
  
  <p>How do I apply validation through jQuery /javascript together for all input fields that it <code>can't be blank/empty/NULL.</code></p>
  
  <p>I don't want to use each time each input box's ID and create a separate validation for each input box and text area.</p>
  
  <p>If any input field is blank then it's border become red and when a use going to write something then become normal( no border i.e. remove that class)</p>
  
  <p><strong>UPDATE</strong>:</p>
  
  <p>There are also select boxes ..how do I validate them together?</p>