class

Jquery adding click function to several spans with the same Class

由 岁酱吖の 提交于 2019-12-25 16:52:25
问题 I'm trying to use jquery to add a .click() function to several dynamically generated spans using their class. What I'm trying is essentially: $(".spanClass").click(function () {}); I have also tried: $(".spanClass").on("click", function () {}); Now, this all works, to an extent. My issue is that the .click() only gets assigned to the first span with this class. Every other span with this class does absolutely nothing when I click it. Obviously, I need every span with the class to have the

Working on classes for a text based game in python

由 筅森魡賤 提交于 2019-12-25 16:52:01
问题 i'm trying to create a function to raise max hp whenever a stat is increased or decreased. i have tried changing self.maxHpCalc() player.** moving the variables = (int) into the orc class in every why i can think of and have been having no luck. depending on how i change it i get self/player have no attribute strength, maxHp or maxHpCalc is not defined. class player: def __init__(self, hp = 1 , maxHp = 1, strength = 4, defense = 5): self.hp = hp self.maxHp = maxHpCalc() self.strength =

Dynamic Method invocation (Objects and reference in inheritance )

由 天大地大妈咪最大 提交于 2019-12-25 16:47:15
问题 Suppose I have 2 classes ........ A Class is base class and class B is derived class and if i create a reference such as : A a=new B(); does it mean that reference a points to object of B Class ? If yes than how am i able to call overridden methods of A in B and not other methods of B ? thank you in advance class A { m1() { } } class B extends A { m1() { } m2() { } } A a=new B(); a.m1(); //it will call overridden m1() in B a.m2(); //it doesnt work if reference "a" points to object of B than

error in creating an instance of class in xaml and setting its properties

由 自作多情 提交于 2019-12-25 16:46:40
问题 i need to create an instance of a class with two property that would be used as converter parameter of a binding. the class is as below: public class UnitQuantityBindClass:DependencyObject { public static readonly DependencyProperty QuantityProperty = DependencyProperty.Register( "Quantity", typeof(EQuantities), typeof(UnitQuantityBindClass)); public EQuantities Quantity { get { return (EQuantities) GetValue(QuantityProperty); } set { SetValue(QuantityProperty, value); } } public static

css - jquery - how to remove wrapper div element?

由 非 Y 不嫁゛ 提交于 2019-12-25 16:41:18
问题 I have an HTML like this. <div class="wrapper"> <input class="myClass" ....> </div> I want to remove the wrapper div with class 'wrapper' so that the output will be. <input class="myClass" ....> Would be great if it is done with jquery. 回答1: Use .unwrap(). Try this: $('.wrapper').children().unwrap(); DEMO 回答2: use .replaceWith() in jquery $('.wrapper').replaceWith(function() { return $('input ', this); }); Fiddle 来源： https://stackoverflow.com/questions/22762279/css-jquery-how-to-remove

Why can't I use a class instance variable inside a singleton class definition?

由 泄露秘密 提交于 2019-12-25 16:08:28
问题 I'm trying to set an instance variable inside a singleton class and I can't get it to work. Here's a simplified version of the problem: class MyClass class << self attr :my_attr @my_attr = {} def my_method (x, y) (@my_attr[x] ||= []) << y end end end MyClass.my_method(1, 2) # => NoMethodError: undefined method `[]' for nil:NilClass Here's the original code sample: class Mic class Req < Rack::Request; end class Res < Rack::Response; end class << self attr :routes @routes = {} def call(env) dup

Creating one instance of an object and using the same instance in different class files

由 折月煮酒 提交于 2019-12-25 16:07:45
问题 I have been searching around the internet about Creating an instance of a object in one class and using that same instance in a different class. I have not found any posts though that apply to what I want to do. Here is an example of what I want to do. public class ThisClass{ public ThisClass{ //This is the object I want to create } } public class FirstClass{ public ThisClass thisclass = new ThisClass(); } public class SecondClass{ //Now in SecondClass I want to be able to access the instance

Java 获取资源路径的3种方法与区别

由 无人久伴 提交于 2019-12-25 14:58:38
【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> ◆一般情况下,我们都使用相对路径来获取资源,这样的灵活性比较大. 比如当前类为com/ketqi/Test.class 而图像资源比如sample.gif应该放置在com/ketqi/sample.gif 而如果这些图像资源放置在icons目录下,则应该是com/ketqi/icons/sample.gif 通过当前类文件的路径获取资源主要有如下几种方式: · 假设当前类为com.ketqi.Test · 包所在的文件夹为bin String imageName = "icons/sample.gif" 1, 通过Class.getResource()定位类路径下的资源(bin/com/ketqi/icons/sample.gif) Class clazz = this.getClass(); URL url = clazz.getResource(imageName); 2,通过ClassLoader.getResource()定位包的根目录下的资源(bin/icons/sample.gif) Class clazz = this.getClass(); URLClassLoader loader = (URLClassLoader)clazz.getClassLoader(); URL url =

Practicing Creating DB classes, need a little guidance

由 核能气质少年 提交于 2019-12-25 14:23:27
问题 So I am on a mission to learn how to create DB classes of my own using PDO. I am fairly new to PDO and more complex class development and wanted to get a little guidance from the community before I get too far into it. I have a class partially built but I know there has to be a better/more logical way to do this. I'd really like to be able to have a single query method so I can trow almost anything at it in my DB class. If this is faulty thinking please let me know why. Currently I have a

Inability to create my UIImageView classes from string

由 99封情书 提交于 2019-12-25 13:47:44
问题 I am creating subclasses of UIImageView class, something like LittleImageView , RedImageView , etc. These subclasses have this convenience method for the creation of specific images: + (UIImageView *)novo { UIImageView *newImage = [[super alloc] initWithImage:... // do stuff return newImage; } When I try to create such classes using this new command by string id newObject = [NSClassFromString(nameOfClass) novo]; I get a crash with "unrecognized selector sent to class". Apparently objective-c
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