Implement the method of making the program wait for a period of time

JAVA background time waiting JAVA implements the method of making the program wait for a period of time. If you want the code to wait for a period of time before continuing to execute in JAVA, you can sleep the current thread for a period of time. 1. sleep method through thread try { Thread.currentThread().sleep(1000);//Wait 1 second } catc ...

Posted by XTTX on Wed, 25 May 2022 19:32:54 +0300

300 lines of code to realize the MVVM responsive principle of Vue

preface Source download Vue's responsive principle is an old interview question, and most people will choose to recite the answer directly to deal with the interview. Once the interviewer continues to ask questions, he can't answer anything. Therefore, I hope to write code (about 300 lines) to implement a simple Vue MVVM framework by referring ...

Posted by superdezign on Wed, 25 May 2022 19:16:48 +0300

10 minutes to thoroughly understand the single page application routing

Last time, we popularized the custom routing routes of the applet and started the routing journey; Today, I'll take advantage of the trend to apply routing on a single page and chat with you for 50 cents. If you don't talk well... Return... A dollar? Single page application features Suppose: in a web page, there is a button. Click it to jump to ...

Posted by trellie on Wed, 25 May 2022 17:27:57 +0300

Basic series of javascript: variables and data types in JavaScript

Basic series of javascript: variables and data types in JavaScript (I) Today, I will review the js foundation systematically and make a record javascript consists of three parts: ECMASCRIPT(ES): describes the syntax and basic objects of the language DOM: document object model, which describes the methods and interfaces for processing web pag ...

Posted by samuraitux on Wed, 25 May 2022 07:29:46 +0300

Ruan Yifeng great God ECMAScript 6 Introduction notes sorting

Ruan Yifeng great God ECMAScript 6 beginner level: https://es6.ruanyifeng.com/ If you don't like the typesetting here, you can go to my YuQue to have a look. YuQue is really unique https://www.yuque.com/isremya/vqgp35 let and const commands The variable declared by let is only valid in the code block in which it is located.   The variable i ...

Posted by RedMaster on Wed, 25 May 2022 06:43:55 +0300

Summary of 9 common ES6 features (these are generally enough)

ECMAScript 6.0 (hereinafter referred to as ES6) is the next generation standard of JavaScript language, which has been officially released in June 2015. Its goal is to make JavaScript language can be used to write complex large-scale applications and become an enterprise development language. ES6 has brought us many unexpected functions. Here, ...

Posted by Gambler on Wed, 25 May 2022 00:25:11 +0300

Use node An express framework

Handwritten an express series Basic usage of express const express = require("express"); const app = express(); app.get("/test", (req, res, next) => { console.log("Club technicians in place*1"); // res.end("club technician starts service 1"); next(); }); app.get("/test", (req, res, next) => { console.log("Club technici ...

Posted by chito on Tue, 24 May 2022 16:59:57 +0300

Picture upload and preview function

This time I share the problems of image upload and preview encountered in my work Because we use the weex framework for development (weex is an old and abandoned framework), we do not support some easy-to-use ui libraries such as El ui, which are popular and have rich functions. Therefore, we use the native input (type = file) when solving the ...

Posted by nikefido on Tue, 24 May 2022 08:46:59 +0300

Get started with React and create React app

React is a JavaScript library for building user interfaces This article mainly introduces the use of create react app Related resources React create-react-app Quick start Create project NPX create react app my app Open project CD my app Start project npm start directory structure There is no configuration or complex folder structure, ...

Posted by gobbly2100 on Tue, 24 May 2022 04:59:31 +0300

How to make this point clear?

I have to say that we need a premise to figure out this. You first need to know the basic concepts of function, object, scope and so on. It would be great to know the call, apply and bind methods Of course, it is very important to learn Chinese well You need to know the difference between first person and second person and third person Let's t ...

Posted by nfr on Tue, 24 May 2022 02:27:00 +0300