AJAX dynamically obtains values from the database through manual splicing and dynamically splices the spliced JSON to the front-end page——AJAX

<!DOCTYPE html> <html lang=”en”> <head> <meta charset=”UTF-8″> <title>Title</title> </head> <body> <script type=”text/javascript”> window.onload = function () { document.getElementById(“show”).onclick = function () { var ajax = new XMLHttpRequest(); ajax.onreadystatechange = function () { if(ajax.readyState === 4) { if(ajax.status === 200) { var fromJava = ajax.responseText; var json = JSON.parse(fromJava); console.log(json); var html = “”; for (var […]

Android Practice Manual-Will ViewBinding cause memory leaks?

Click to jump=>100 examples of Unity3D special effects Click to jump=>Case project actual source code Click to jump=>Game Script-Assisted Automation Click to jump=>Android Control Complete Manual Click to jump=>Scratch programming case Click to jump=>Full series of soft exams About the author Focus onAndroid/Unity and various game development skills, andVarious resource sharing (websites, tools, materials, source […]

(Euler) openEuler system adding network card file configuration process, (Euler) openEuler system manual configuration ipv6 address process, (Euler) openEuler system network management instructions

Article directory instructions OpenEuler23.03 system manual IP configuration process Modify name Generate network card configuration file [openEuler23.03 system adds network card file configuration process] Manually specify ip add ipv6 address Modify configuration file information and name Delete the created network card information Restart the network card to take effect and test openEuler23.03 system network management […]

STM32 manually transplants HAL firmware library

1. Three development methods of STM32 The essence of microcontroller development is the operation of registers, and the firmware library is a further encapsulation of registers. Direct register development: The execution efficiency is the highest, but the development is difficult and inconvenient for transplantation. You need to consult the data manual frequently. Standard peripheral library […]

How to manually obtain the IOC container (global context object) in spring/springboot?

IDE: IntelliJ IDEA 2022.2.3 x64 Operating system: win10 x64 bit home edition JDK: 1.8 Article directory Preface 1. How to manually obtain the spring container [ApplicationContext]? Method ①: Get the spring container in the startup class Method ②: Customize the tool class to implement the ServletContextListener interface to obtain the spring container [recommended web project] […]

miniconda configuration manual – basic configuration, initialization, management of virtual environments, and package operations

Table of Contents Preface The first step is to install the software. This step cannot be skipped. The second step is to configure the basic miniconda. This step mainly involves modifying the “.condarc” file. The third step is miniconda initialization. This step cannot be skipped. Step 4. Manage the virtual environment Step 5: Use the […]

[Linux] Supplement: Process management, manual control of processes, and scheduled tasks

Table of Contents 1. Manually start the process 1. Understand foreground startup and background startup 2. How to complete the switch between foreground startup and background startup 3. Complete execution of multiple tasks in parallel 4. End the process 1.kill 2.killall 2. pkill 2. Planning tasks 1. at one-time planned task 2. Practical operation 2. […]

[Use of STM32-DSP library] Based on Keil5 + STM32CubeMX + CMSIS-DSP manual addition and library addition method

Usage of STM32-DSP library 1.CMSIS-DSP 1.1 Introduction to DSP library 1.2 Supported function categories 1.3 Macro definition 2. Operation 2.1 STM32CubeMX configuration basic project 2.2 Implementation using Lib library (recommended) 2.3 Manually add DSP files (you can download the latest official library, which is fully functional) 3. MFCC tests DSP acceleration effect In order to […]