小编Lyu*_*hev的帖子

我有一个模式弹出窗口，单击按钮即可打开。我试图在弹出窗口打开时调暗背景，但无法使其工作。

这就是我所拥有的：

JavaScript：

function popup(centername, centertype, area, address, province, itprovider, software, addon,
               principalname, principleemmail, itname, itemail, itno, academicname, academicno, academicemail,
               invigilatorname, invigilatorno, invigilatoremail, centeridep, provinceidep, centernameep, centertypeidep, id) {
    var $dropdown = $("#ddlCenterType");
    $("#txtCenterName").val(centername);
    $("#txtArea").val(area);
    $("#txtAddress").val(address);
    $("#ddlProvince").val(province);
    $("#ddlProvider").val(itprovider);
    $("#ddlSoftware").val(software);
    $("#ddlAddOn").val(addon);

    $("#txtPrincipalName").val(principalname);
    $("#txtPrincipalEmail").val(principleemmail);
    $("#txtITName").val(itname);
    $("#txtITemail").val(itemail);
    $("#txtITNumber").val(itno);
    $("#txtAcadName").val(academicname);
    $("#txtAcadNumber").val(academicno);
    $("#txtAcadEmail").val(academicemail);
    $("#txtInvName").val(invigilatorname);
    $("#txtInvNumber").val(invigilatorno);
    $("#txtInvEmail").val(invigilatoremail);

    $("#txtCenterId").val(centeridep);
    $("#txtProvinceID").val(provinceidep);
    $("#txtCtrName").val(centernameep);
    $("#txtTypeID").val(centertypeidep);
    $("#txtID").val(id);
    $dropdown.val(centertype);
    $("#popupdiv").dialog({
        width: 1250,
        height: 1290,
        autoOpen: true,
        modal: true,
        open: function (event, ui) {
            $(".ui-widget-overlay").css({
                background: "rgb(0, 0, 0)",
                opacity: ".50 !important",
                filter: …