asp.net下用js实现鼠标移至小图，自动显示相应大图

2024-07-10 12:40:25

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实现根据后台绑定小图片，鼠标移至小图，自动显示相应大图

.Net精简版本

<script language="JavaScript">
   function GetShowImg(imgfile)
   {
    document.all("ShowImage").src = "/semir/images/"+ imgfile;

   }
  </script>
//DataList绑定
<asp:datalist id="DlSides" runat="server" OnItemCommand="DlSides_ItemCommand" RepeatDirection="Horizontal"
      RepeatColumns="3" DataKeyField="SideID" CssClass="semirText">
      <ItemTemplate>
       <a onmouseover="GetShowImg('<%# DataBinder.Eval(Container.DataItem, "sidePath")%>')"><IMG style="WIDTH: 45px; HEIGHT: 56px" alt="" src='/semir/images/small<%# DataBinder.Eval(Container.DataItem, "sidePath")%>' border=0 ></a>
                </ItemTemplate>
     </asp:datalist>

// 显示相应大图
<img name="ShowImage">

ASP完整版

<script language="JavaScript">
    function ImagePreload()
    {
    var args = ImagePreload.arguments;
    document.ImgPreArray = new Array(args.length);
    for(var i=0; i<args.length; i++)
    {
    document.ImgPreArray[i] = new Image;
    document.ImgPreArray[i].src = "admin/upfile/newbook/"+ args[i];
    }
    }
     function fitSize() {
      var a, b;
      var imgobj = document.all("ShowImage");
      var oldimg = new Image();
      oldimg.src = imgobj.src;
      var dw = oldimg.width;
      var dh = oldimg.height;

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