title: How to get MAC address of client System in Javascript?
body: <p>I am getting answer in PHP but its not working because of session.</p>
  
  <pre><code>//Get the ipconfig details using system commond  
  system('ipconfig /all');  
  // Capture the output into a variable  
  $mycomsys=ob_get_contents();  
  // Clean (erase) the output buffer  
  
  $find_mac = "Physical"; //find the "Physical" &amp; Find the position of Physical text  
  $pmac = strpos($mycomsys, $find_mac);  
  // Get Physical Address  
  $macaddress=substr($mycomsys,($pmac+36),17);  
  ob_clean();  
  //Display Mac Address
  exec("/sbin/ifconfig eth0 | grep HWaddr", $output);
  print_r( $output);die();
  </code></pre>
  
  <p>This fulfils my requirement but not running for my applications, So I am in need of the same in JavaScript.</p>