WeChat Applet
Mini Program Development
A deeper explanation of how to implement left-swipe deletion in WeChat mini-programs
A deeper explanation of how to implement left-swipe deletion in WeChat mini-programs
The left-swipe to delete effect is very popular in app interaction methods, such as the universal application of WeChat
WeChat left-swipe to delete
Another example The efficiency app Clear
Clear slides left to delete
Technically speaking, it is not difficult to achieve this effect. The response Just slide the operation, move the component, add some coordinate calculations, and record the status. There are also some articles that introduce how to achieve this effect on mini programs, but I can basically confirm that these developers have not tested in detail on real machines, because through my practice, I have found that it is almost impossible to achieve this effect perfectly on mini programs It’s an impossible mission.
This all starts with the event mechanism of the applet. For sliding operations, the applet provides two ways to respond to events, bind and catch. The difference lies in whether to prevent the event from bubbling, but it does not provide preventDefault. Method, that is to say, it is impossible to dynamically determine whether to prevent an event from bubbling in the program.
Then let’s talk about another feature of the mini program. This feature is only valid on real machines. That is, the framework provides a vertical scrolling effect for the page by default. There is no need to write a line of code, and the mini program also thoughtfully provides Got onPullDownRefresh and onReachBottom, well, everything is perfect.
Then when these features encounter the left sliding effect, it will be embarrassing. For a perfect left-swipe deletion effect, when it is determined to be a horizontal slide, the user's movement in the vertical direction should be ignored (after all, you can't expect the user's finger to not shake up and down). However, because there is no preventDefault method, either the sliding event is caught, or you can only expect the user's finger to slide strictly horizontally.
Due to the above reasons, in the small programs I have seen, there are almost no left-swipe delete operations. It is almost because there is indeed one that achieves this effect, Impression Micro Note List
Impression micro-note list
You can see that the page will scroll up and down at the same time when you swipe left, which is not a good experience. (By the way, the early version of the Impression Micro Notes list uses scroll-view to achieve this effect, and the experience is even worse)
Of course, you can also catch the sliding event, but when sliding horizontally like this No problem, you won’t see any reaction when swiping vertically.
I was very frustrated when I discovered these problems, but I think the core of the problem is to be able to dynamically prevent the page from scrolling vertically. In addition to view, scroll-view also has the ability to scroll vertically, and there is also an attribute scroll-y Boolean false that allows vertical scrolling. Yes, I think you have also thought of it. As long as this property is dynamically set under the right conditions, the desired effect should be achieved.
From an implementation point of view, vertical scrolling should be disabled first, and then activated after determining that the user operates vertically. Well, perfect. But the fact hit me in the face again, activating this property in the touchmove event does not activate the vertical scrolling effect.
The other way around is to activate vertical scrolling first and disable this attribute after determining the horizontal operation. Well, practice has proven that this method works, but there are still problems. Before we determine the sliding direction, the user is likely to move in the vertical direction. Although it is very small, the user will still feel the page scrolling up and down.
The following is the imitation WeChat homepage effect I achieved based on this idea
Swipe left to delete
In subsequent articles , I will show you another way to achieve this effect, which perfectly eliminates the vertical scrolling problem of the page, but still has other limitations.
The above is the detailed content of A deeper explanation of how to implement left-swipe deletion in WeChat mini-programs. For more information, please follow other related articles on the PHP Chinese website!
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
AI Hentai Generator
Generate AI Hentai for free.
Hot Article
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
1377
52
Xianyu WeChat mini program officially launched
Feb 10, 2024 pm 10:39 PM
Xianyu's official WeChat mini program has quietly been launched. In the mini program, you can post private messages to communicate with buyers/sellers, view personal information and orders, search for items, etc. If you are curious about what the Xianyu WeChat mini program is called, take a look now. What is the name of the Xianyu WeChat applet? Answer: Xianyu, idle transactions, second-hand sales, valuations and recycling. 1. In the mini program, you can post idle messages, communicate with buyers/sellers via private messages, view personal information and orders, search for specified items, etc.; 2. On the mini program page, there are homepage, nearby, post idle, messages, and mine. 5 functions; 3. If you want to use it, you must activate WeChat payment before you can purchase it;
WeChat applet implements image upload function
Nov 21, 2023 am 09:08 AM
WeChat applet implements picture upload function With the development of mobile Internet, WeChat applet has become an indispensable part of people's lives. WeChat mini programs not only provide a wealth of application scenarios, but also support developer-defined functions, including image upload functions. This article will introduce how to implement the image upload function in the WeChat applet and provide specific code examples. 1. Preparatory work Before starting to write code, we need to download and install the WeChat developer tools and register as a WeChat developer. At the same time, you also need to understand WeChat
Implement the drop-down menu effect in WeChat applet
Nov 21, 2023 pm 03:03 PM
To implement the drop-down menu effect in WeChat Mini Programs, specific code examples are required. With the popularity of mobile Internet, WeChat Mini Programs have become an important part of Internet development, and more and more people have begun to pay attention to and use WeChat Mini Programs. The development of WeChat mini programs is simpler and faster than traditional APP development, but it also requires mastering certain development skills. In the development of WeChat mini programs, drop-down menus are a common UI component, achieving a better user experience. This article will introduce in detail how to implement the drop-down menu effect in the WeChat applet and provide practical
Implement image filter effects in WeChat mini programs
Nov 21, 2023 pm 06:22 PM
Implementing picture filter effects in WeChat mini programs With the popularity of social media applications, people are increasingly fond of applying filter effects to photos to enhance the artistic effect and attractiveness of the photos. Picture filter effects can also be implemented in WeChat mini programs, providing users with more interesting and creative photo editing functions. This article will introduce how to implement image filter effects in WeChat mini programs and provide specific code examples. First, we need to use the canvas component in the WeChat applet to load and edit images. The canvas component can be used on the page
Use WeChat applet to achieve carousel switching effect
Nov 21, 2023 pm 05:59 PM
Use the WeChat applet to achieve the carousel switching effect. The WeChat applet is a lightweight application that is simple and efficient to develop and use. In WeChat mini programs, it is a common requirement to achieve carousel switching effects. This article will introduce how to use the WeChat applet to achieve the carousel switching effect, and give specific code examples. First, add a carousel component to the page file of the WeChat applet. For example, you can use the <swiper> tag to achieve the switching effect of the carousel. In this component, you can pass b
What is the name of Xianyu WeChat applet?
Feb 27, 2024 pm 01:11 PM
The official WeChat mini program of Xianyu has been quietly launched. It provides users with a convenient platform that allows you to easily publish and trade idle items. In the mini program, you can communicate with buyers or sellers via private messages, view personal information and orders, and search for the items you want. So what exactly is Xianyu called in the WeChat mini program? This tutorial guide will introduce it to you in detail. Users who want to know, please follow this article and continue reading! What is the name of the Xianyu WeChat applet? Answer: Xianyu, idle transactions, second-hand sales, valuations and recycling. 1. In the mini program, you can post idle messages, communicate with buyers/sellers via private messages, view personal information and orders, search for specified items, etc.; 2. On the mini program page, there are homepage, nearby, post idle, messages, and mine. 5 functions; 3.
How to use PHP to develop the second-hand transaction function of WeChat applet?
Oct 27, 2023 pm 05:15 PM
How to use PHP to develop the second-hand transaction function of WeChat applet? As a popular mobile application development platform, WeChat applet is used by more and more developers. In WeChat mini programs, second-hand transactions are a common functional requirement. This article will introduce how to use PHP to develop the second-hand transaction function of the WeChat applet and provide specific code examples. 1. Preparation work Before starting development, you need to ensure that the following conditions are met: the development environment of the WeChat applet has been set up, including registering the AppID of the applet and setting it in the background of the applet.
Implement image rotation effect in WeChat applet
Nov 21, 2023 am 08:26 AM
To implement the picture rotation effect in WeChat Mini Program, specific code examples are required. WeChat Mini Program is a lightweight application that provides users with rich functions and a good user experience. In mini programs, developers can use various components and APIs to achieve various effects. Among them, the picture rotation effect is a common animation effect that can add interest and visual effects to the mini program. To achieve image rotation effects in WeChat mini programs, you need to use the animation API provided by the mini program. The following is a specific code example that shows how to
