javascript 讀取單選按鈕、複選框以及下拉列表的當前值

1.讀取單選框的當前值

<span style="white-space:pre">	</span>/*獲取單選按鈕當前值*/
        function getRadioValue(name){
            var items = document.getElementsByName(name);
            for (var i = 0; i < items.length; i++) {
                if(items[i].checked){
                    return items[i].value;
                }
            };
        }

2.讀取複選框的當前值

<span style="white-space:pre">	</span>/*獲取複選框的當前值*/
        function getCheckBoxValue(name){
            var items = document.getElementsByName(name);
            var index = 0;
            var arr = [];
            var hobbys = "";
            for (var i = 0; i < items.length; i++) {
                if(items[i].checked){
                    arr[index++] = items[i].value;
                    hobbys = hobbys+items[i].value+" ";
                }
            };
            return hobbys; //返回包含被選中字段的字符串
        }

3.讀取下拉列表的當前值

var department = document.getElementById("_department").value; //直接讀取就ok

4.效果：