There are countless instances of javascript getting checkbox checkbox. The following example is implemented in pure js
var form = document.getElementById("form2");var field = form.elements["test2"];var option = Dining.getSelectedOption(form, field);var message = "";for (var i = 0, len = option.length; i < len; i++) {message += "Select id:" + option[i].id + "/nSelected name:" + option[i].name + "/nSelected value:" + option[i].value + "/n/n";}alert(message);/*getSelectedOption: function (selectform, selectionfield) {var result = [];var option = null;for (var i = 0; i < selectionfield.length; i++) {option = selectionfield[i];if (option.checked) {result.push(option);}}return result;}<form id='form2'><label>Sorting: </label><input id='aaaa' type='checkbox' name='test2' value='1'><label for='aaaa'>Monthly sales</label><input id='bbbbb' type='checkbox' name='test2' value='2'><label for='bbbbb'>Rating</label><input id='ccccc' type='checkbox' name='test2' value='3'><label for='cccccc'>Promotion</label> <br style='clear:both'><label>Category: </label><input id='ddddd' type='checkbox' name='test2' value='4'><label for='ddddd'>Business package</label><input id='eeeeee' type='checkbox' name='test2' value='5'><label for='eeeeee'>Cold dish</label><input id='ffffff' type='checkbox' name='test2' value='6'></form>",