//创建一个select标签
                          var s = document.createElement("select") ;
                var d = [{t:'one',v:'1'},{t:'two',v:'2'}] ;
                for(var i in d){                    
                     var option = new Option(d[i].t,d[i].v);                    
                     s.options.add(option);
                }                
                document.body.appendChild(s);

//获取标签的文本

function show()
{
    var myselect = document.getElementById("select");
    alert(myselect.selectedIndex);
    alert(myselect.options[myselect.selectedIndex].text);
}

function show2(){
    var myselect = document.getElementById("select");
    for(var i=0;i<myselect.length ;i++){
        if(myselect[i].selected == true){
            alert(myselect[i].innerHTML);
        }
    }
}

//获取select的值
function getSelectedValue(name){
         var obj=document.getElementById(name);
         return obj.value; 
}


//获取radio的选中的值
function getRadioValue(name){
var radioes = document.getElementsByName(name);
for(var i=0;i<radioes.length;i++)
{
if(radioes[i].checked){
return radioes[i].value;
}
}
return false;
}