我有一个在单击按钮时打开的模式弹出窗口。我试图在弹出窗口打开时使背景变暗，但我无法让它工作。
这是我的:
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: "Alpha(Opacity=50)",
});
},
buttons: {
Close: function () {
$(this).dialog("close");
}
}
});
}
我也在 CSS 中添加了这个，但仍然不起作用:
.ui-widget-overlay {
opacity: .50 !important;
filter: Alpha(Opacity=50) !important;
background-color: rgb(50, 50, 50) !important;
}
我知道这个问题已被问过几次，但我仍然无法解决。请协助。谢谢!
最佳答案
只需从不透明度中删除 important 即可。虽然我建议为此使用 CSS。您可以在模态打开和关闭时添加和删除一个类，并将其与 ui-widget-overlay 结合使用以覆盖 background 和 opacity .
这是一个工作示例，说明它是如何工作的
$( function() {
$("#dialog").dialog({
width: 360,
height: 290,
autoOpen: true,
modal: true,
open: function (event, ui) {
$(".ui-widget-overlay").addClass('modal-opened');
},
close: function(event, ui){
$(".ui-widget-overlay").removeClass('modal-opened');
}
});
} );.ui-widget-overlay.modal-opened{
background: rgb(0, 0, 0);
opacity: 0.5;
filter: Alpha(Opacity=50);
}<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
<title>JS Bin</title>
<link href="https://code.jquery.com/ui/1.12.1/themes/smoothness/jquery-ui.css" rel="stylesheet" type="text/css" />
</head>
<body>
<div id="dialog" title="Basic dialog">
<p>This is the default dialog which is useful for displaying information. The dialog window can be moved, resized and closed with the 'x' icon.</p>
</div>
<script src="https://code.jquery.com/jquery-3.1.0.js"></script>
<script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
<script src="script.js"></script>
</body>
</html>这是上面例子的一个plnkr https://plnkr.co/edit/GUW4NFEO9omn898n8aGm?p=preview
关于javascript - 模态弹出窗口打开时背景屏幕变暗，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/48612027/