Change the border color if input value is null - Javascript jQuery

Javascript examples for jQuery:Form Input

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Description

Change the border color if input value is null

Demo Code

ResultView the demo in separate window 

<html>
 <head> 
  <meta name="viewport" content="width=device-width, initial-scale=1"> 
  <script type="text/javascript" src="https://code.jquery.com/jquery-1.9.1.js"></script> 
  <script type="text/javascript">
    $(window).load(function(){//from   w w  w. ja  va 2  s.c om
$('#txtLastName, #txtFirstName').filter(function() {
    return $.trim(this.value) === '';
}).css("border-color","red");
    });

      </script> 
 </head> 
 <body> 
  <input type="text" id="txtLastName"> 
  <input type="text" id="txtFirstName">  
 </body>
</html>

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