javascript - Add a pseudo-class to a certain class. This class has a click event. Now when I click on the pseudo-class, the click event is also triggered.

Add a pseudo-class to a certain class. This class has a click event. Now when I click on the pseudo-class, the click event is also triggered. How can I prevent the click event from being triggered by clicking on the pseudo-class?

欧阳克 2017-07-05 10:44:13 0  2  1070

Class initialization problem

Initialization of a class means that a class file of the class is generated, right?

P粉477414213 2022-11-19 12:50:45 0  0  726

Convert base class instance to derived class without typecasting in typescript

I extended a new class from the base class and added some properties. How to create an instance of a derived class using a given base class (including attached properties)? This code works but casts the class type and is not type safe. How can I do this without type casting? //Baseclassisimportedfro...

P粉451614834 2024-02-25 19:48:09 0  2  442

c++ - Why can class be followed by 2 class names?

I don’t understand VALUE_OBJ_CLASS_SPEC in the syntax of class. Why can class be followed by two class names? {code...} code comes from jdk8

PHP中文网 2017-06-05 11:10:52 0  2  1171

Problem assigning base class pointer to derived class

Assign the derived class address to the base class pointer, that is, the base class pointer refers to the derived class object, which is what we usually call polymorphism. But when it is the other way around, it must be forced type conversion before it can be compiled. Here is the direct code: {code...

曾经蜡笔没有小新 2017-06-05 11:11:46 0  3  1213

java - abstract inner class + generics

Simple inner class usage: {code...} Add generics to the above example {code...} Call the inner class in the test method and compile correctly. An error is reported in the main method, which cannot be referenced from a static context. If you call an internal class in another newly created class, no e...

给我你的怀抱 2017-05-17 10:00:28 0  1  902

Will calling a static method directly using the class name in PHP trigger the constructor of the class or parent class?

As the title says, PHP calls static methods directly using the class name. Two questions: 1. Will the constructor of the current class be called? 2 Will the constructor of the parent class of the current class be called?

淡淡烟草味 2017-07-07 10:34:10 0  3  1450

PHP class interface technology (interface)

Interface Technology What is an interface? Look at the "development history" of interfaces: Class --> Abstract class --> Some kind of "structural form" that is more abstract than abstract class: interface; Interface: with

A-王青召 2018-11-14 15:49:57 0  0  1149

class shared variable problem

For example, I have a class that has a static global variable a; it can also be non-static and then there is 1.php to assign the value of a to the class variable a to 88888; there is also 2.php how to get the variable of class a; Three different files, class, 1.php, 2.php

脾气超好 2019-09-03 23:33:27 0  1  1205

abstract class

In the code introducing the abstract class, running shows that AbstractClass is not found. What is going on?

★☆兴☆★ 2020-03-30 14:47:51 0  0  979

javascript - Confusion about class and super in ES6

{Code...} After reading Ruan Yifeng's ES6 tutorial, I am still a little confused about class and super. First, create a Book class and then create a subclass Book to inherit the parent class Book. Super calls the constructor of the parent class and calls it in toSay. The getName() method of the pare...

黄舟 2017-05-19 10:31:04 0  2  768

The mongodb extension is installed but the MongoInt64 class cannot be found

The mongodb extension is installed but MongoInt64 This class is not found The mongodb extension is installed but MongoInt64 This class is not found The mongodb extension is installed but MongoInt64 This class is not found The mongodb extension is installed but MongoInt64 This class is not found The ...

刘彬 2018-12-27 22:01:52 0  0  998

What is the difference between using a file in a class and using a file outside a class in Laravel?

What is the difference between using a file in a class and using a file outside a class in Laravel? For example, we often see a bunch of uses after the namespace. These uses are outside the class, and some uses are inside the class. What is the difference between the two? Example: HttpControllersAut...

ringa_lee 2017-05-16 16:47:46 0  1  533

__autoload introduces class files

When using the __autoload method to automatically call class files, is it necessary to instantiate each class file that needs to be imported? ? ? Isn't this similar to require and include? ? ?

还要我怎样 2019-03-06 18:11:35 0  2  1219

Custom class cannot be found in Laravel 10

I created a custom class in laravel10 located at: App\Helpers\CompletedOrders The class contains the following code:

P粉933003350 2023-08-15 21:46:13 0  1  526

$this in PHP class

class DBmodel{     private $name;     public __construct(){     $this->name = $name;     } &

A _ Ｑ _ｉ_ 2021-10-10 19:59:11 0  5  901

PHP class attribute declaration?

<?php class Image{     private $path;     public function __construct($path = './'){      &nb

A _ Ｑ _ｉ_ 2021-10-17 22:05:54 0  7  900

Why can't the request class be introduced in the BASE class?

As mentioned, I cannot use it after introducing it in the base class.

xjcnet 2020-07-19 14:08:36 0  0  1108

Error Class 'Behavior\BuildLiteBehavior' not found solution

Urgent! Urgent! ! Xiaobai is asking for advice and a detailed solution. Thinkphp 3.2.3 moved to another computer environment. The environment is the same but an error is reported. The system has an error Class 'Behavior\BuildLiteBehavior' not found. What is the solution? Class 'Behavior\BuildLiteBeh...

莫若相见 2021-07-07 10:26:42 0  1  1316

Design a user class USER. The variables in the class include user name, password and variables that record the number of users. Define class constructors, getters, and setters

Design a user class USER. The variables in the class include username, password and variables that record the number of users. Define the constructor method of the class, the methods for getting and setting passwords, and the methods for displaying user information.

李雅琦 2020-12-21 15:09:28 0  1  2004