Detailed explanation of how javascript operates server control code examples

 ==请选择== 是 否 

//js操作服务器控件dropdownlist  选项0 选项1   选项0 选项1 

document.getElementById("ddlFolder").value="0";//0为你要选中的项的value

var DropDownListCurrencyNew = document.getElementById("ddlFolder"); for(i = 0; i < DropDownListCurrencyNew.options.length; i++) { if(DropDownListCurrencyNew.options[i].text == "选项0") { DropDownListCurrencyNew.options[i].selected = true; } }

var selValue = document.getElementById("DropDownList1").options[document.getElementById("DropDownList1").selectedIndex].value;

var selText = document.getElementById("DropDownList1").options[document.getElementById("DropDownList1").selectedIndex].text;