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问题 I'm trying to write an if statement where if one of the elements has it's display set to "none", I want the parent element to also display "none"... This is the code I'm trying, which doesn't work... /* tried this first */ if($('#prevx a').attr('display') == 'none') { $(this).parent().attr('display','none'); } /* and then this */ if($('#prevxa > a').attr('display') == 'none') { $('#prevxa').attr('display','none'); } The markup looks like this: <ul> <li class="navnext" id="nextxa"> <a id=

问题 I guess I'm struggling with generics. I want to create simple UIView extension to find recursively a superview of class passed in the function param. I want the function to return optional containing obviously either nil, or object visible as instance of provided class. extension UIView { func superviewOfClass<T>(ofClass: T.Type) -> T? { var currentView: UIView? = self while currentView != nil { if currentView is T { break } else { currentView = currentView?.superview } } return currentView

问题 I've got the following code on my page, and what i'm trying to do is that when a user clicks outside the #loginBox, i want the entire #loginOverlay to fadeout. But i can't achieve this effect without having the fadeout triggered by clicking on #loginBox... It's placed on the bottom of the page, and i have a link on the page that triggers the fadein. But the fadeout is a bit struggling now tbh. I tried doing this: $("#loginOverlay").click(function() { ...fadeout... }); but it gives me the same

问题 I've got the following code on my page, and what i'm trying to do is that when a user clicks outside the #loginBox, i want the entire #loginOverlay to fadeout. But i can't achieve this effect without having the fadeout triggered by clicking on #loginBox... It's placed on the bottom of the page, and i have a link on the page that triggers the fadein. But the fadeout is a bit struggling now tbh. I tried doing this: $("#loginOverlay").click(function() { ...fadeout... }); but it gives me the same

问题 I have this LESS setup: .wrapper { .parent { height: 100px; .children { //some style; &:hover { .parent & { height: 150px; } } } } } I need to change some height for parent element by hover on some child inside of it. This code is not working, so is there any possible to do this? Much thx for help. 回答1: Adding the :hover to the .parent instead of the .children div will achieve the result, http://codepen.io/duncanbeattie/pen/xvDdu .wrapper { .parent { pointer-events:none; height: 100px;

问题 So, I'm trying to get the object that a custom object is 'inside' of. Here's an example. Assume that o is an object - it doesn't matter what kind, it can just store variables. o = Object() class Test(): def __init__(self): self.parent = o ## This is where I fall off; I want to be able to access ## the o object from within the Test object o.test = Test() So, how would I get o from inside of Test? I know I could write the Test function to pass it in with o.test = Test(o) but I'd rather do it

问题 I have a Window1.xaml main Window; and after some event, I display a UserControl EditFile.xaml. The code behind is: public static int whichSelected = -1; private void button1_Click(object sender, RoutedEventArgs e) { //searchEditPanel.Children.Clear(); whichSelected = listViewFiles.SelectedIndex; searchEditPanel.Children.Add(_EditFileControle); //this is Grid } And now, how can I close the opened/added UserControl from its content by clicking a Cancel button or something like that? 回答1: Have

问题 I've got a page with an iframe. The page and the source of the iframe are in different domains. Inside the iframe I'm using a rich text editor called CuteEditor (which has turned out to be not so cute). There are certain javascript functions in CuteEditor which try to access 'document' but the browser denies access since they're not in the same domain. Here's the exact error: Permission denied to access property 'document' http://dd.byu.edu/plugins/cuteeditor_files/Scripts/Dialog/DialogHead

问题 Process A fork() s process B. Process A dies and therefore init adopts B. A watchdog creates process C. Is it somehow possible for C to adopt B from init ? Update : Or would it even be possible to have C adopt B directly (when A dies), if C were created prior to A's dead, without init becoming an intermediate parent of B? Update-1: Also I would appreciate any comments on why having the possiblity to adopt a process the way I described would be a bad thing or difficult to impossible to

问题 <ul><li><div><div><span id="thisid"></span></div></div></li></ul> $('#thisid').parent('li'); that obviously doesn't work, but how do I grab the li element? I don't want to use: $('#this').parent().parent().parent(); I don't want to use it, because it can happen that there is just one div element, instead of two. In this case I would grab the ul element instead of the li element. 回答1: $('#thisid').parents('li'); // ^ plural! Note that if you only want the first <li> element in the ancestry,