js擷取checkbox複選框選中的選項執行個體，jscheckbox

js擷取checkbox複選框選中的選項執行個體，jscheckbox

有關javascript 擷取checkbox複選框的執行個體數不勝數。
js實現：

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);/*擷取選中的選項*/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);} www.jbxue.com}return result;}<form id='form2'><label>排序：</label><input id='aaaaa' type='checkbox' name='test2' value='1'><label for='aaaaa'>月銷量</label><input id='bbbbb' type='checkbox' name='test2' value='2'><label for='bbbbb'>評分</label><input id='ccccc' type='checkbox' name='test2' value='3'><label for='ccccc'>優惠</label> <br style='clear:both'><label>分類：</label><input id='ddddd' type='checkbox' name='test2' value='4'><label for='ddddd'>商務套餐</label><input id='eeeee' type='checkbox' name='test2' value='5'><label for='eeeee'>涼菜</label><input id='fffff' type='checkbox' name='test2' value='6'></form>",

js怎取得name=checkbox[]的複選框選中個數

var inputs = document.getElementsByName("cb[]");

var checked_counts = 0;

for(var i=0;i<inputs.length;i++){
if(inputs[i].checked){
checked_counts++;
}
}

alert(checked_counts);
 
怎獲得js擷取複選框的選中的值？

<input type="checkbox" id="box" value="sss1"/>
<input type="checkbox" id="box" value="sss2"/>
<input type="checkbox" id="box" value="sss2"/>
<input type="checkbox" id="box" value="sss2"/>
<input type="checkbox" id="box" value="sss2"/>
<input type="button" name="btnOK" value="確定"/>
<script for = btnOK event=onclick>
var value="";
for (var i=0;i<box.length;i++ ){
if(box[i].checked){ //判斷複選框是否選中
value=value+box[i].value + " "; //值的拼湊 .. 具體處理看你的需要,
}
}
alert(value);//輸出你選中的那些複選框的值
</script>