javascript - 在javascript中获取下拉列表的值

Question

我正在从数据库中填充下拉列表中的值。每个文本都有值(value)。我想使用 JavaScript 选择值..

我的代码

 <%= Html.DropDownList("Role", ViewData["Role"] as SelectList,"Select" , new {onchange = "javascript:ddlRoleChanged();", id="ddlRoles",  @class = "dropdownStyle2"})%>

Javascript代码:

<script type="text/jscript">
    $(document).ready(function () {
        var tempDDVal = '<%= Session["Function"] %>';
        $("#ddlRoles option:contains(" + tempDDVal + ")").attr('selected', 'selected');
    });
    function ddlRoleChanged() {
        debugger;
        var selectvalue = document.getElementById('#ddlRoles');
        var selectedValue = $('#ddlRoles').val();
        window.location = '/home?func=' + selectedValue.valueOf();
    };        
</script>   

但是 selectedvalue 仅显示文本值。如何处理？

Answer 1

您想要从#ddlRoles中选择项目。试试这个:

var selectedValue = $('#ddlRoles option:selected').val();
window.location = '/home?func=' + selectedValue;