通过Javascript获得DropDownList中选择的内容

获得DropDownList中选择项的Text值：

document.getElementById("DropDownList1").options[document.getElementById("DropDownList1").selectedIndex].innerText

或

document.getElementById("DropDownList1").options[document.getElementById("DropDownList1").selectedIndex].text

获得DropDownList中选择项的Value值：

document.getElementById("DropDownList1").options[document.getElementById("DropDownList1").selectedIndex].value

下面是我在网上查到的方法：

var select1 = document.all.<%= yourDropDownList.ClientID %>;

var select1value = select1.options[select1.selectedIndex].value;

var select1Text = select1.options[select1.selectedIndex].innerText;

var select2 = document.all.<%= yourListBox.ClientID %>;

var oOption = document.createElement("OPTION");

select2.options.add(oOption);
oOption.innerText = select1Text

oOption.Value = select1value ;

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function test()
{
var drp =
document.getElementById("DropDownList1");
var lst =
document.getElementById("ListBox1");
if (drp.length > 0)

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

if (drp.options(i).selected == true)
{
var oOption
= document.createElement("OPTION");
lst.options.add(oOption);

oOption.innerText = drp.options(i).innerText;
oOption.value
= drp.options(i).value;
}
}
}
}

function test1()
{
var lst =
document.getElementById("ListBox1");
if (lst.length > 0)

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

if (lst.options(i).selected == true)
{

lst.options.remove(i);
}
}
}
}