• Understanding the visibility and order of Java multithreading


    Visibility of multithreading The modification of shared variable value by one thread can be seen by other threads in time. Shared variables If a variable has copies in the working memory of multiple threads, then this variable is the shared variable of these threads. Java Memory Model JMM (JAVA memory model, referred to as JMM) […]

  • Hide HTML elements through display or visibility


    Sometimes we need to control whether HTML elements in web pages are displayed or hidden according to certain conditions, which can be realized through display or visibility. Use the following example to understand the difference between display and visibility. The simple example code is as follows: Copy code The code is as follows: <html> <head> […]