JavaScript -- BOM programming
Hello! Hello, everyone, let's meet again ~ next, let's learn today's little knowledge~
I How to get HTML elements in JS?
Detailed explanation:
1. Through the id attribute in the tag
document.getElementById();
eg:
<1>. First, let's define a button and div
<!DOCTYPE html>
<html>
<head>
<meta charset= ...
Added by emcb_php on Tue, 01 Mar 2022 12:13:32 +0200
Chrome V8 source code 48 The mystery of weak type addition, "+" source code analysis
1 IntroductionJavaScript is a weakly typed language. When its variables and expressions participate in the operation, even if the type is incorrect, they can get the correct type through implicit conversion, which is like all types can carry out all operations for users. By analyzing the addition source code of V8, this paper leads you to under ...
Added by sheen.andola on Tue, 01 Mar 2022 12:02:00 +0200
SpingMVC learning - Controller&@RequestMapping&RestFul
SpingMVC learning-
Controller
The controller implementation mode is interface or annotation, which is generally implemented by annotation. It is responsible for parsing the user's request, transforming it into a model and returning it to the view parser
The following four annotations are equivalent
@Component component @Service layer @Contr ...
Added by m7_b5 on Tue, 01 Mar 2022 11:57:26 +0200
An in-depth understanding of the principle and mechanism of SharedPreference
1, SharedPreferences is easy to use1. CreateThe first parameter is the name of the stored xml file, and the second parameter is the opening method, which is generally usedContext.MODE_PRIVATE；
SharedPreferences sp=context.getSharedPreferences("name", Context.MODE_PRIVATE);2. Write//You can create a new SharedPreference to manipulate the stored ...
Added by DotSPF on Tue, 01 Mar 2022 11:07:28 +0200
Research on bypass UAC
Basic knowledgeUser account control is a new set of infrastructure technologies in Windows Vista (and later operating systems), which can help prevent malicious programs (sometimes referred to as "malware") from damaging the system, and help organizations deploy easier to manage platforms.With UAC, applications and tasks always run in ...
Added by netdynamix on Tue, 01 Mar 2022 10:45:32 +0200
SpringBoot introductory tutorial, thoroughly understand these more than 90% of Java interviewers
Power node Mr. Wang he's SpringBoot introductory series of courses, easy to understand, based on SpringBoot 2 4 version explanation.Start with the details and explain POM in each case Important dependencies in XML, followed by application configuration file, and finally code implementation. Let you know why, gradually let you master the automat ...
Added by adamwhiles on Tue, 01 Mar 2022 10:41:32 +0200
Configuring and using servlets in IDEA
Configuring and using servlets in IDEA
Crazy God says Java
1. Introduction to Servlet
Servlet is a technology for sun company to develop dynamic websun provides an interface called Servlet in these API s. If you want to develop a Servlet program, you only need two steps:
Write a class to implement the Servlet interfaceDeploy the deve ...
Added by buluk21 on Tue, 01 Mar 2022 10:27:52 +0200
RowKey design principles of HBase, including cases (all)
####ForewordThe rows of the RowKey of HBase are sorted by row keys in dictionary order. This design optimizes scanning and allows the storage of related rows or adjacent rows that will be read together. However, poorly designed row keys are a common cause of hotspotting. When a large amount of client traffic is directed to one or more nodes in ...
Added by dstar101 on Tue, 01 Mar 2022 10:24:29 +0200
How many of the three Spring Boot development tools have you used?
1, Springboot dedvetoolsIt is a tool that enables SpringBoot to support hot deployment. The following is the referenced methodOr check the following configuration directly when creating the project:Either add the following dependencies to the springBoot project:<dependency>
<groupId>org.springframework.boot</groupId>
& ...
Added by jimmygee on Tue, 01 Mar 2022 09:46:01 +0200
Development of HDMI based on FPGA
HDMI Fundamentals
1, Principle
HDMI Adopt and DVI Same transmission principle-TMDS(Transition Minimized Differential signal)，That is, the transmission differential signal is minimized.
TMDS The transmission system is divided into: sending end; Receiver.
Sender:( RGB 24 bit parallel data of the signal, R，G，B 8 for each of the three primary ...
Added by JJ123 on Tue, 01 Mar 2022 09:39:40 +0200