在JS中获得DROPDOWNLIST中选择的值
有这样的需求,一共4个DROPDOWNLIST,1,3为年,2,4为月,现在要做一个JS函数,让它仅在1,3DROPDOWNLIST相等的情况下,才去判断2是否大于4.如何写?
<asp:DropDownList id="ddlStartYear" runat="server"></asp:DropDownList>
<asp:DropDownList id="ddlStartMonth" runat="server"></asp:DropDownList>
<asp:DropDownList id="ddlEndYear" runat="server"></asp:DropDownList>
<asp:DropDownList id="ddlEndMonth" runat="server"></asp:DropDownList>
关键,如何在JS中获得DropDownList中的选择值?