我有div
人可以导入照片(如封面)。虽然他们没有上传任何照片但它有封面图片,但当他们上传照片时,背景会变为白色。 (这就是我想要的工作方式,但它不起作用)
这个例子正在运作:
$(document).ready(function () {
if ('#bgbg:not(:empty)') {
$('#bgbg').css({ 'background-color':'#fff',
'background-image':'none !important' });
}
});
.profile-photo-bg {
background-image:url("../images/cover-placeholder.jpg");
background-size:cover;
height:245px;
overflow:hidden;
}
<div class="profile-photo-bg no-padding col-lg-12 col-md-12 col-xs-12 col-sm-12">
<div id="bgbg" class="profile-photo-bg2">
<div ng-repeat="image in theUser.attributes.ImageGallery " class=" galleryImage2 " style="background:url({{image._url}}) 50% 50% / cover; ">
<i class='ion-close' ng-click='deleteFromGallery(image)'></i></div>
</div>
</div>
现在我有a
的不同代码,里面没有使用相同的jquery脚本:
<div id="bgbg3" class="profile-photo-bg no-padding col-lg-12 col-md-12 col-xs-12 col-sm-12">
<a style="" class="fotki" ng-repeat="image in theUser.attributes.ImageGallery" href="{{image._url}}" data-lightbox="gallery">
<div ng-if='$index < 5' class="galleryImage2 " style="background-image:url({{image._url}}); background-size: cover; "></div>
</a>
</div>
我使用angularjs,jquery,ionic。
我怎样才能让它发挥作用?
答案 0 :(得分:1)
您的JavaScript语法中有错误。您应该在$('#bgbg')
语句中选择if
之类的元素。此外,您应该检查div是否在if
语句中包含子项而不是使用选择器。在div中添加一个类也比使用jQuery应用纯css更好。
JavaScript:
$(document).ready(function () {
$('.bgbg').each(function() {
if ($(this).children().length == 0) {
$(this).addClass('no-children');
}
})
});
CSS:
.bgbg {
background-image:url("http://www.gigcity.ca/wp-content/uploads/2017/06/Tool-feature.jpg");
background-size:cover;
height:245px;
overflow:hidden;
}
.bgbg.no-children {
background-image: none !important;
background-color: white;
}
HTML:
<div class="profile-photo-bg no-padding col-lg-12 col-md-12 col-xs-12 col-sm-12">
<div class="profile-photo-bg2 bgbg">
<div ng-repeat="image in theUser.attributes.ImageGallery " class=" galleryImage2 " style="background:url({{image._url}}) 50% 50% / cover; ">
<i class='ion-close' ng-click='deleteFromGallery(image)'></i>
</div>
</div>
</div>
<div class="profile-photo-bg no-padding col-lg-12 col-md-12 col-xs-12 col-sm-12">
<div class="profile-photo-bg2 bgbg">
</div>
</div>
这是一个工作小提琴:Remarks