JavaScript version of .each loop using element type and id wildcard

Is there a JavaScript version of the following. It works as I want, but it looks a bit messy and I've read that sometimes breaking from an outer for loop within a .each loop is more neatly achieved with Javascript.

for(array to iterate over){
    var abSelected = false;
    $("input[type='checkbox'][id*=AB]:checked").each(function() {
      abSelected = true;
    }
    开发者_如何学Pythonif(abSelected){
      break;
    }
...do other stuff...
}

I think the if statement is unnecessary. I want to loop all checkboxes beginning with 'AB' and break from the outer for loop if any are selected.

Thanks.

you can simply check on the length of the selected checkboxes beginning with 'AB' collection returned by jQuery, if > 0, break:

for(array to iterate over){
    if($("input[type='checkbox'][id*=AB]:checked").length > 0)
        break;
...do other stuff...
}

you don't need to loop all the checkboxes.
You could just use $('input[type='checkbox'][id*=AB]:checked').length

This will get you the count of all checked checkboxes.