for (var i = 0; i < items.length; i++){
        if (items[i].checked) {
            checkedItems.push(items[i]);
			items[i].removeAttr("checked")
        }
    }

var items = document.querySelectorAll("input[type=checkbox]");
	var checkedItems = [];
 
	checkedArray.length = 0;
    for (var i = 0; i < items.length; i++){
        if (items[i].checked) {
            checkedItems.push(items[i]);
			items[i].checked=false;
        }
    }