Javascript examples for jQuery:Tag Traversing
get some value from javascript object and check for null
<html> <head> <meta name="viewport" content="width=device-width, initial-scale=1"> <script type="text/javascript" src="https://code.jquery.com/jquery-1.6.2.js"></script> <script type="text/javascript"> $(window).load(function(){//from w w w.j a va2 s .c o m console.log($('body').length); }); </script> </head> <body> </body> </html>