jQuery, dynamically count number of elements on a page

I am trying to count the number of inputs on a page with a particular class.

$(".count").click开发者_运维问答(function(){
  var named = $(this).parent().find("input").eq(1).attr('class');
  var count = $('input[name='+named+']').length;
  alert(count + ' of class ' + named);
});

The count always returns a value of zero. Have I set the 'count' variable correctly? If not, how should I do this.

thanks.

If you want them by class, you'd need to change this:

$('input[name='+named+']')

to this:

$('input[class='+named+']')

or this:

$('input.'+named)

If the element you get in the first line of the handler has more than one class, you'll need to change it from this:

var named = $(this).parent().find("input").eq(1).attr('class');

to this:

var named = $(this).parent().find("input").eq(1).attr('class').split(/\s+/).join('.');

so that you end up with:

someClass.anotherClass

Then use this one:

$('input.'+named)