用JS给DropDownList添加新项！ --zt

< script language = " javascript " >          function  addItem()         {         if (document.all("v").value=="") return;         var tOption = document.createElement("Option");         tOption.text=document.all("v").value;         tOption.value=document.all("DDL1").options.length+1;         document.all("DDL1").add(oOption);        }                  </ script >    < DIV  style ="BORDER-RIGHT: 1px dotted; BORDER-TOP: 1px dotted; Z-INDEX: 103; LEFT: 304px; BORDER-LEFT: 1px dotted; WIDTH: 304px; BORDER-BOTTOM: 1px dotted; POSITION: absolute; TOP: 288px; HEIGHT: 160px; BACKGROUND-COLOR: ghostwhite"                 ms_positioning ="GridLayout" >< INPUT  onclick ="addItem();"  style ="Z-INDEX: 101; LEFT: 136px; WIDTH: 99px; POSITION: absolute; TOP: 56px; HEIGHT: 22px"                     type ="button"  value ="添加新项目"  id ="addnew" >                  < asp:DropDownList  id ="DDL1"  style ="Z-INDEX: 102; LEFT: 32px; POSITION: absolute; TOP: 96px"  runat ="server"                     Width ="96px" >                      < asp:ListItem  Value ="0" > 北京 </ asp:ListItem >                      < asp:ListItem  Value ="1" > 天津 </ asp:ListItem >                      < asp:ListItem  Value ="2" > 上海 </ asp:ListItem >                  </ asp:DropDownList >< INPUT  id ="v"  style ="Z-INDEX: 103; LEFT: 32px; WIDTH: 96px; POSITION: absolute; TOP: 56px; HEIGHT: 22px"                     type ="text"  size ="10" ></ DIV > posted on 2005-07-05 13:12 PointNet 阅读(267) 评论(1)  编辑 收藏 引用 网摘 所属分类: Js与DHtml 

转载于:https://www.cnblogs.com/Nina-piaoye/archive/2006/11/20/565770.html

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