i have a div which has many divs.when binding the divs i create click event for each item like below
jQuery.each(opts.items, function (i, item)
What you have aren't valid selectors. You're passing something that's almost HTML to the jQuery function so it doesn't know what to do with it.
If the IDs for your elements are 1 and 3, then you'd just do:
$('#1, #3').trigger('click');
Perhaps a better way, if you want to simulate the click on each of them, is to iterate over your collection again:
jQuery.each(opts.items, function(i, item) {
$('#' + item.key).trigger('click');
});