js 实现复制到粘贴板的功能代码

<script type="text/javascript"> 
function copyData() { 
var copyText = document.getElementById("ctl00_cpRight_txtUrl").value; 
window.clipboardData.setData("Text",copyText); 
} 
</script> 
 
<asp:TextBox ID="txtUrl" runat="server" Height="30px" Width="349px"></asp:TextBox> 
<input id="btnCopyUrl" type="button" value="复制URL到粘贴板" onclick="copyData()" /> 
注：ctl00_cpRight_txtUrl这个ID其实是txtUrl生成页面后自动生成的ID。