js Html页面控件的获取值

 1.//复选框全选

        function GetOkAll(checkall) {

            var grid = document.getElementById('gridPD');

            var items = grid.getElementsByTagName("input");

            for (i = 0; i < items.length; i++) {

                if (items[i].type == "checkbox") {

                    items[i].checked = checkall.checked;

                }

            }

        }

2. //自动调整计算

        function AutoSum(index, type) {

            var table = document.getElementById("gridPD"); //gridview的ID

            var txt = index.value;

            var tr = table.getElementsByTagName("tr"); //gridview下的Tr

            var k = index.parentNode.parentNode.rowIndex; //行索引

            var Amount = tr[k].getElementsByTagName("td")[4].innerHTML; //总金额

            var auto = parseFloat(Amount) - parseFloat(txt);

           

            if (type == "1") {tr[k].getElementsByTagName("td")[7].getElementsByTagName("input")[0].value=Math.round(auto* 100) / 100; }

            if (type == "2") {tr[k].getElementsByTagName("td")[6].getElementsByTagName("input")[0].value=Math.round(auto* 100) / 100; }

        }

3.//下拉列表

   document.getElementById("Edit_SendBranch").disabled = "disabled";//设置Edit_SendBranch不可用

   document.getElementById("Edit_SendBranch").options[1].selected=true;//设置选中

  document.getElementById("Edit_SendBranch").options[i].selected = "selected";;//设置选中

4.//单选列表

 objArr = document.getElementById('ListSendType').children;

if (objArr[0].checked == true)//判断选中哪个