Programmer Group

What is the keep-alive component? <keep-alive>is a built-in component of Vue that wraps components to cache component instances~ The official Vue document mentions: <keep-alive>is an abstract component: it does not render a DOM element by itself, nor does it appear in the parent component chain of the component. When a compon ...

MVVM concept MVVM represents Model-View-ViewModel. Model: Model layer, responsible for handling business logic and interacting with the server side View: View layer: responsible for converting data models into UI displays, which can be easily understood as HTML pages ViewModel: The View Model layer that connects Models to Views and ser ...

Requirements: click the home page list to enter the secondary page, and keep the original position when returning.Keep alive is a built-in component of Vue, which can keep the state in memory during component switching and prevent repeated rendering of DOM. 1:App.vue <template> <div id="app"> <!--Page return does ...

FlutterChat It's based on flitter + dart + Photo_ view+image_ Practical cases of wechat like interface App developed by picker and other technologies. It realizes the functions of message + expression, picture viewing, pop-up window encapsulation, red packet / video / friend circle, etc. Framework technology Coding / Technology: vscade + fl ...

React builds JavaScript libraries for user interfaces, primarily for building UI interfaces.Instagram, Open Source, 2013. Characteristic: Declarative design Efficient, uses virtual DOM to render DOM, minimizing DOM operations. Flexible to use with other libraries. JSX, commonly known as JS, writes HTML inside, an extension of JavaScri ...

1, Simple entry level tree menu implementation (pure background logic) 1. Introduction (1) Development environment　　IDEA + JDK1.8 + mysql 1.8　　SpringBoot 2.2.6 + mybatis-plusHere, it is only developed in the background (json data is returned), which will be explained in the subsequent presentation of the front page. (2) Data sheetAs follows ...

ESLint   whether it's a multi person collaboration or a personal project, code specification is very important. This can not only avoid basic syntax errors to a great extent, but also ensure the readability of the code. preparation 1, VSCode ESLint plug in The ESLint plug-in is used to display some error prompts in the editor accordi ...

I. Objects of JS 1.1 Several ways to create objects 1.1.1 Create Objects by Literal Quantity In js, a pair of {} is actually an object var person = { name: "tom", age: 23, read: function () { console.log(name, ": read book") } } 1.1.2 via the constructor of the sys ...

Mixing (Mixins) What is mixins?Is a way to reuse functions during component development in vue When the page styles are different, but the methods you perform and the data you need are similar, you can use Mix Bar, a common and identical part of the extract to encapsulate, reduce the amount of code and make modifications and tests more diff ...

vue pop up layer These are the pop-up layers I usually use for mobile terminals. There are four pop-up layers, with the default value of type 0.12 This is a component layer.vue code: <layer ref="layer"></layer> import layer from '@/components/layer/layer' 1. Loading 1. Default in lo ...