Different between primary key and unique key?
One table may have more than one Unique Key Constraint
columns, but should have only one Primary Key Constraint
column. Unique key allow us NULL values where Primary key not allow us null values. How to select first div and change data of its.
Most of the time we need to select first div that time we are just thinking what need to do. But if you think it is very simple just follow below example. Any query reply this post or comments. <head> <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js" type="text/javascript"></script> <script type="text/javascript"> //runs once page is loaded and ready to be manipulated $(document).ready(function(){ $('.genre').first().delegate('.album-cover','click',function() { var str = $(this).text(); str = parseInt(str) + 1; $(this).clone().addClass('rock').appendTo('.genre:first').html(str); }); }); </script> </head...
