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Author: Chimezie Enyinnaya Translator: front end Xiaozhi Source: blog There are dreams and dry goods. Wechat search [Daqian world] pays attention to this bowl washing wisdom who is still washing dishes in the early morning. This article GitHub https://github.com/qq449245884/xiaozhi It has been included. There are complete test sites, ma ...

The biggest benefit of GraphQL is to simplify the request response content without redundant fields. The front end can decide what data the back end returns. However, it should be noted that the decision-making power of the front end depends on what data the back end supports. Therefore, GraphQL is more like a REST that simplifies the return ...

1. What is JSX? const element = <h1>Hello, world!</h1>; JSX is a JavaScript syntax extension 2. Why use JSX? You need to bind and process events in the UI, notify the UI when the state changes at some time, and display the prepared data in the UI. React doesn't force JSX, but most people find it visually helpful to put JSX and UI ...

Vue.js learning notes First stop Initial use js // Let / const how to create variables const app = new Vue({ el:'#app ', / / used to mount elements to be managed data:{ // Define data message: 'How do you do!', name: 'hello How do you do' }, // Method area, in which methods can be called in HTML meth ...

Promise concept Promise is a solution for asynchronous programming, which is more reasonable and powerful than traditional solutions - callback functions and events. The Promise is simply a container that holds the results of an event (usually an asynchronous operation) that will not end in the future. characteristic The state of the objec ...

#1, What is a regular expression Regular expressions are patterns used to match character combinations in strings. Regular expressions are often used to retrieve and replace text that conforms to a pattern. 2, Regular expressions are used in JavaScript Using RegExp objects to create regular expressions var regexp = new RegExp(/ ex ...

Author: KUMAR HARSH Translator: front end Xiaozhi Source: blog There are dreams and dry goods. Wechat search [Daqian world] pays attention to this bowl washing wisdom who is still washing dishes in the early morning. This article GitHub https://github.com/qq449245884/xiaozhi It has been included. There are complete test sites, materials ...

Method for verifying dimensions before uploading ElementUI pictures I upload component usage of ElementUI For specific attributes, you can view the official document. Here is the hook function: before upload = "beforeavatarupload". You can know from the name that this is the method executed before uploading the image. Here you can p ...

catalogue 1. Pull up loading 2. Pull down refresh 3. Synchronous use of pull-up loading and pull-down refresh 4.props API  1. Pull up loading <van-list v-model="loading" :finished="finished" finished-text="No more" @load="onLoad" > <van-cell v-for="item in list" :key="item" :title="item" /> </van-list> e ...

JavaScript operation DOM Update DOM After we get a DOM node, we can update it. You can directly modify the text of a node in two ways: One is to modify the innerHTML attribute. This method is very powerful. It can not only modify the text content of a DOM node, but also directly modify the subtree inside the DOM node through HTML fragments: ...