Question

How do I determine the state of a checkbox (i.e. checked or unchecked) with the following code:

function deleteItems() {
    var items = $('.td_checkbox');
    for (var item in items) {

        // this doesn't work
        if ($(item).is(:checked) == true)
            alert('delete my div if checked!');            
    }
}

Answer 1

You need quotes around :checked, but I also don’t think your loop works correctly.

This will do what you want (use each() rather than for item in items)

function deleteItems() {
    $('.td_checkbox').each(function(){
        if ($(this).is(":checked"))
            alert('delete my div if checked!');            
    });
}