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About the abnormal situation of selecting all input and choosing unselected

The previous article mentioned: The first time I click the Select All button to input display the checkmark, but the second time I don’t display it. You need to use prop to add the checked attribute. However, using prop will cause a problem. The checkmark

2025-07-12
Scrolling effect is prohibited after the mask layer is popped up [Implementation code]

Method 1: $('.shade').bind( "touchmove", function (e) { e.preventDefault();}); Method 2: $("body,.main").height($(window).height())

2025-07-12
js implements dynamically created element binding events

Newly created elements cannot be bound by traditional methods, and live methods are required. Example: $('.rule').live('mouseover', function () { $(this).addClass("cancelable"); The above js implementation dynamically created

2025-07-12
Chapter 10: Thumbnail and warning box components of giant screen header

Bootstrap, from Twitter, is the most popular front-end framework at present. Bootstrap is based on HTML, CSS, and JAVASCRIPT. It is simple and flexible, making web development faster. Let me tell you the key points of learning. Key points of learning: 1.

2025-07-12
Java traversal collection method analysis (implementation principle, algorithm performance, applicable occasions)

Overview In the Java language, a data collection framework is provided, which defines some abstract data types such as List and Set. Each abstract data type has its own specific implementation, and the underlying layer adopts different implementation meth

2025-07-12
JCrop+ajaxUpload The example code for image cutting upload

Let me show you the renderings first: the user's uuid in the page code is written as the test<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%><!

2025-07-11
JS imitates the nine-grid login function implementation code on mobile phone

I haven't done any project recently. I have no time to write a small demo. I'm here to share it with the Wulin Network platform for your reference. I'll forgive me if I don't write this article well! Functions and method logic are commente

2025-07-11
Bootstrap must-learn Carousel plugin

The Bootstrap carousel plug-in is a flexible and responsive way to add sliders to your site. Besides that, the content is flexible enough to be an image, an embedded frame, a video, or any other type of content you want to place. If you want to reference

2025-07-11
Simple use of Bootstrap modal dialog box

A modal box (Modal) is a child form that is overlaid on the parent form. Typically, the purpose is to display content from a separate source, which can have some interaction without leaving the parent form. The subform can provide information, interaction

2025-07-11
BootStrap carousel plug-in (carousel) supports left and right gesture sliding methods (three types)

The Bootstrap Carousel plug-in is a flexible and responsive way to add sliders to a site. Besides that, the content is flexible enough to be an image, an embedded frame, a video, or any other type of content you want to place. Because the recent developme

2025-07-11
JavaScript code realizes automatic shaking and moving from left to right up and down

I have worked on a project in the past few days. It turned out to be made with css3 animation. Because it is incompatible with IE, it has been changed to using js. I will share it with you for your reference. If there are any bugs in the code, please forg

2025-07-11
WeChat QR code login principle js code analysis

In many places, applications such as using QR codes to log in, QR code payment, QR code accounts (I won’t talk about QR code stallion here, fraud), QR code verification, multi-terminal auxiliary authorization applications have begun to increase. Let’s tal

2025-07-11
Detailed introduction to the Promise mode of Javascript asynchronous programming model

Promise programming mode is also called thenable, which can be understood as execution after delay. Each Promise has a unique interface called then, and when the Promise fails or succeeds, it will make a callback. It represents an operational link that ma

2025-07-11
JavaScript Learning Guide Callback Issues

Callback hell is homely for JavaScript programmers, but it is not so beautiful to handle callbacks with too deep levels. The following sample code snippet uses three-layer callbacks, and then replenishes the brain for more layers of scenes. It is simply s

2025-07-11
Why do eval in JS add brackets

Introduction to eval ----Eval is a method of global object prototype in ECMA definition;----The parameters accepted by eval are string format js code, which will be executed by the execution engine (remember 'advanced programming' or something, an

2025-07-11

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