jquery判斷RadioButtonList和RadioButton中是否有選取項目範例_jquery

複製代碼 代碼如下:

 <% --Body 碼--%> <BR><div> <BR><asp:RadioButtonList ID="RadioButtonList1" runat="server"> <BR><asp:ListItem Value="A">a</asp: ListItem> <BR><asp:ListItem Value="B">b</asp:ListItem> <BR></asp:RadioButtonList> <br><br><asp:RadioButton ID="RadioButton1" GroupName="RBtn " Text="男" runat="server" Checked="true" /> <BR><asp:RadioButton ID="RadioButton2" GroupName="RBtn" Text="女" runat="server" /> <br> <br><asp:Button ID="Button1" runat="server" Text="Button" OnClientClick="Button1_ClientClick()"></asp:Button> <BR></div>

複製程式碼 程式碼如下:

<%--Head 代碼--%> <BR><script language="javascript" type="text/javascript" src="js/jquery-1.9.1.js"></script> <BR><script language="javascript" type="text/javascript"> <br><br>function Button1_ClientClick() <BR>{ <BR>alert($("input[name='RadioButtonList1']:checked" ).val()); // 若都沒有選中，則彈出“undefined”，若有選中的，則彈出對應的Value 值<BR>if(document.getElementById("RadioButton1").checked==true) // 若RadioButton1被選取<BR>{ <BR>alert($("#RadioButton1:checked").val()); //跳出RadioButton1 <BR>alert($("#RadioButton2:checked").val ()); //彈出undefined <BR>alert($("#RadioButton1:checked").val()=="RadioButton1"); //彈出true <BR>} <BR>return false; //暫時不用傳到後台<BR>} <BR></script> <BR>