Programmer Group

We've been asking vue about the principle of two-way data binding. Today, I'm just handwriting a two-way data binding and I'll get a better understanding of it. Because the current vue technology is also constantly updated, now updated to 3.0, the internal method logic has also changed a lot, so as the development of us, in fact, we master the ...

Problem: in Android qq browser, v-lazy-image cannot be displayed all the time. Cause analysis: After debugging, it is found that the IntersectionObserver in the qq browser lacks an isIntersecting field, while the v-lazy-image plug-in displays pictures according to isIntersecting, so it can only be judged by using intersectionRatio. Another diff ...

Project environment node 10.15.3yarn 1.15.2win10Code completion time: April 18, 2019 Don't talk too much, put the source code first GitHub https://github.com/951477037/electron-print git clone https://github.com/951477037/electron-print.git //Installation dependency yarn //Operation item yarn run dev //Packing project yarn run build directory ...

introduce According to the requirements, we want to build a multi page vue.js project. How to transform a single page vue.js project into a multi page project? Follow me and watch 1. Create a single page vue.js project Simply record the following creation steps: --install cnpm npm install -g cnpm --registry=https://registry.npm.taobao.or ...

Reference blog: https://blog.csdn.net/qq_36742720/article/details/82455061 In the first two days, you need to draw an eckarts chart. Click the buttons of the previous week and the next week to get the data of the chart. I have been looking for it on the Internet for a long time and found it written by the blogger. It's super. I ...

Vue.js virtual dom and diff algorithm What is virtual dom? Virtual DOM is also called vdom. In fact, it uses the Object model of js Object to simulate the real DOM, so its structure is a tree structure; vdom will render once as soon as it is created Take a look at the code //Initial virtual dom structure var vdom = { vn ...

What is singleton mode Singleton Pattern ensures that a class has only one instance and provides a global access point to access it Singleton pattern is a simple and easy to understand design pattern, but its usage scenarios are very wide, including the famous Vuex also uses singleton pattern. This article introduces two implementation methods ...

Core: by building a prototype interceptor, the array can first modify its own methods, including push, pop, shift, unshift, splice, sort, and reverse. By redefining the contents of the above methods, the trigger dependency is realized when calling the above methods, so as to inform the subscribers listening to the number of gro ...

Today, I uploaded the Demo I made in these two days to github and generated a sample project: Vue mobile Demo. I hope it can help the novice. Let's briefly introduce the content of this project Basic situation This project is based on the van demo project, which adds many practical functions, involving Vue + van T + Axios + mockjs, ...

In a single page application, the first and last parts of the page layout are fixed on the layout page, and the middle part is the route entry. At this time, the header title will not change when visiting the page. The solution to this problem is as follows: By using the routing guard (before router enter, before router update) and routing met ...