find('select[name=slot_value]option:selected') code example

Example 1: jquery get selected option value

var selectedOptionText = $('#mySelectID').find(":selected").text();//selected option text
var selectedOptionVal = $('#mySelectID').find(":selected").val();//selected option value

Example 2: jquery get dropdown selected value

<asp:DropDownList ID="DropDownListId" runat="server" CssClass="DropDownListClass"></asp:DropDownList>

var value1 = $("[id*=DropDownListId]").val();
var value2 = $(".DropDownListClass").val();