How to check multiple checkboxes checked using jquery?

Question

i am new to the jquery, it is quite interesting, but i am having a little problem, i am populating multiple checkboxes from database using foreach loop like this,

Answer 1

First of all id of the checkboxes should be unique.

Do like this

Now in jQuery check like this to get all the checkboxes thats checked.

var checkCount = $("input[name='city[]']:checked").length;

if(checkCount == 0)
{
   alert("Atleast one checkbox should be checked.");
}