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问题 I tried getting help on the WordPress forums but no luck. Anyways, here is my question... Lets say I am creating 10 parent categories and 2 sub categories to each parent. My WordPress post belongs to one sub category of a particular parent category How do I get the parent category name ONLY? I don't want subcategories names? what WordPress code would do that? And one more question... Is it possible to query post by the parent of a sub category by using: but instead of entering cat=1 or the

问题 I tried getting help on the WordPress forums but no luck. Anyways, here is my question... Lets say I am creating 10 parent categories and 2 sub categories to each parent. My WordPress post belongs to one sub category of a particular parent category How do I get the parent category name ONLY? I don't want subcategories names? what WordPress code would do that? And one more question... Is it possible to query post by the parent of a sub category by using: but instead of entering cat=1 or the

问题 Below is my most recent attempt: var aSl = document.querySelector('input[id^="blahblah"]'); aSl.closest("span.k-icon.k-i-expand").click(); It returned: myjs.js:181 Uncaught TypeError: Cannot read property 'closest' of null I have also tried parent.sibling in place of .closest above - that returned '...parent is not a function' error. Below is my mark-up: <span class="k-icon k-i-expand">::before</span> <--- this is what I'm trying to run .click() on <span class="k-checkbox-wrapper"> <input

问题 #include <stdio.h> #include <sys/type.h> #include <unistd.h> #include <stdlib.h> #include <errno.h> int main(void) { pid_t pid; int i; for(i=0; i<3; i++) { pid = fork(); if(pid == -1) { printf("Fork Error.\n"); } else if(pid == 0) { printf("I am child"); } } if(pid != 0) { while((pid = waitpid(-1, NULL, 0)) > 0) if(errno == ECHILD) break; printf("I am parent and all children have exited.\n"); } exit(0); return 0; } The result is that, 'I am child' is printed 7 times, 'I am parent and all

问题 How do you emit event inside recursive child components vuejs Taking the tree example from vue site https://vuejs.org/v2/examples/tree-view.html How would you transmit on click to the parent each clicked elements id? 回答1: In the case of recursive elements, you can create an event bus in the parent, pass it to the children as a prop, and have each prop pass it to any children they generate. Each child emits events on the bus, and the parent handles them. I copied the tree-view exercise you

问题 Is there a way to find the parents of a WPF control by its name, when the name is set in the xaml code? 回答1: Try this, element = VisualTreeHelper.GetParent(element) as UIElement; Where, element being the Children - Whose Parent you need to get. 回答2: In code, you can use the VisualTreeHelper to walk through the visual tree of a control. You can identify the control by its name from codebehind as usual. If you want to use it from XAML directly, I would try implementing a custom 'value converter

问题 Let's pretend I am building a tic-tac-toe game (becouse it's pretty similar as a structure) I want the result to be shown in a popup, with a new game button, and I want this popup to let me access settings (with another button) and change them, always staying within the popup, then leave and finally close it and start a new game. I wish i could keep things ordered and therefore have a separate popup class where i can build my custom popup. I have the newgame method and reset method as method

问题 Let's pretend I am building a tic-tac-toe game (becouse it's pretty similar as a structure) I want the result to be shown in a popup, with a new game button, and I want this popup to let me access settings (with another button) and change them, always staying within the popup, then leave and finally close it and start a new game. I wish i could keep things ordered and therefore have a separate popup class where i can build my custom popup. I have the newgame method and reset method as method

问题 I have a ContextMenu like this: <StackPanel Orientation="Horizontal"> <StackPanel.ContextMenu> <ContextMenu> <MenuItem Header="Delete" Click="OnDeleteClicked" /> </ContextMenu> </StackPanel.ContextMenu> </StackPanel> And I need to get the instance of the StackPanel that owns that ContextMenu . I already tried this: private void OnDeleteClicked(object sender, System.Windows.RoutedEventArgs e) { FrameworkElement parent = e.OriginalSource as FrameworkElement; while (!(parent is StackPanel)) {

问题 So i have a form. Most of the questions asked in the forms are using Radio inputs. i'm going with <label>Option1 <input type="radio"> </label> <label>Option2 <input type="radio"> </label> I'm styling the Labels using :hover, giving it a subtle background change to indicate which option you are highlighting. However, i want the label for the selected option to have a different colored background. Is there any way of doing this using CSS, or do I have to go with jQuery? What i want to do is