selector

问题 I'm new to jQuery so this is probably simple, but... If I have this HTML: <a name="foo">Foo</a> how can I select the anchor element by its name foo ? It doesn't have an id property. 回答1: You can do it like this: $('a[name=foo]') It's called a attribute equals selector. 来源： https://stackoverflow.com/questions/8948758/jquery-selector-anchor-elements-by-name

问题 I am building an app for keeping track of reading assignments for a university course. Each ReadingAssignment has included a Bool value that indicates if the reader has finished reading the assignment. The ReadingAssignments are collected into WeeklyAssignment arrays. I want to have the user be able to touch a label and have a checkmark appear and show the assignment as completed. I would like this touch to also update the .checked property to true so I can persist the data. So, I am trying

问题 I am building an app for keeping track of reading assignments for a university course. Each ReadingAssignment has included a Bool value that indicates if the reader has finished reading the assignment. The ReadingAssignments are collected into WeeklyAssignment arrays. I want to have the user be able to touch a label and have a checkmark appear and show the assignment as completed. I would like this touch to also update the .checked property to true so I can persist the data. So, I am trying

问题 I have a GridView using a custom adapter which consists of a relativelayout containing an imageview. I have enabled MultiChoiceMode on the gridview and enabled CAB (Contextual Action Bar). This works great, however I am stumped on how I will show a persistent selector around my grid items as they are selected. My selector works on the initial press, but I have yet to find a way in which it will persist until the item is unselected. Expectation: User long presses an item, the item is selected

问题 I have a view with several buttons that all have the same target and action. At the moment the action is @selector(doSomething). I need to be able to determine which button is pressed but I'm not sure of the best way to do this. The method doSomething is declared as... -(void)doSomething; Is there a better way to declare this so I can get more info out? Thanks for any help! Oliver 回答1: If you declare the method as - (void)doSomething:(UIButton *)sender with the corresponding selector

问题 I am very new to Swift as I justed started on it only a few months back. I have an aching problem with this error. -[UIViewController tableView:numberOfRowsInSection:]: unrecognized selector sent to instance XXX Here is a list of possible fixes that I have so far gathered and implemented already. I have changed the Custom Class to CheckboxQuestion class instead of the UIViewController class. Custom Class I have connected the tableview to the datasource and delegate. I have accounted for all

问题 I'm trying to create somewhat of a highlighting/selecting tool [using jQuery] in my web app that watches what elements you hover over inside an iFrame, selects the hovered-over element, and uses that element's styling to create on overlaying div . Think of the element selection tool in your web inspector. Here's a demo that selects all visible elements (except html and body ). Hover over one: http://jsfiddle.net/PrAfG/3/ The problem I'm having is that if you move really quickly across the

问题 I am a beginner of iOS development and while going through this document (iOS Developer Guide about configuring a TableView with Indexed List) I came across this: // Listing 4.7 for (State *theState in statesTemp) { NSInteger sect = [theCollation sectionForObject:theState collationStringSelector:@selector(name)]; theState.sectionNumber = sect; } I could not figure out the selector ( @selector(name) ) and its purpose, nor could I find the method with the name passed in the selector i.e. name .

问题 I want to do something like this: var html = $("#media").html(); $("#multimedia-content").append(html); $("#multimedia-content").filter("*").removeAttr("id"); The 3th line fails, I want to remove all id's from this part of html but I don't know how to do the selection. Thanks! 回答1: Personally, i would try this: $('#media') // grab the media content .clone() // make a duplicate of it //.find('*') // find all elements within the clone .removeAttr('id') // remove their ID attributes //.end() //

问题 This question already has answers here : Closed 7 years ago . Possible Duplicate: How to get elements with multiple classes Working on a bit of javascript code that sets the current URL of the referring page to pass into an iframe widget. No control over the code of the page on which the javascript resides, except for the one bit of javascript code. An example of the element value I need to grab is as follows: <div id="new_p_2FRolls-Royce_p_2F2013-Rolls-Royce-Phantom_p_2BDrophead_p_2BCoupe