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jQuery's data caching module attaches any type of data to DOM elements in a secure way, avoiding circular references between JavaScript objects and DOM elements and resulting memory leaks. Data caching module provides a unified method of data setting, reading and removing for DOM elements and JavaScript objects. Within jQuery, it also provides ...

GitHub address Code cloud address Usually we control permissions by @PreAuthorize("hasRole('ROLE_USER')) annotation, and configuring permission requirements in HttpSecurity. Here, we control access rights based on the requested URI, and we can use annotations to control access rights. Create a new resource project to allocate resources and ...

In the actual project development work, we often encounter the work that needs to do some timing tasks, so how to achieve in Spring Book? 1. Adding dependencies In the pom.xml file, only spring-boot-starter dependencies need to be introduced: List of code: spring-boot-scheduler/pom.xml <dependencies> <dependency> <g ...

In HTML 5, many semantic tags have been added. For example, footer, header and so on, today's protagonist is dialog tag (vii) As the name implies, it is used to define dialog boxes. At present, only Chrome and Safari support this tag, so it's not used much, but it's really good. Don't worry. There's an official polyfill. Usage method 1. Basic ...

# [1] Field # AutoField() self-increasing type, usually used on id, is not specified, and gradually ID is automatically added to the model # CharField(max_length=?) Character type must be given maximum length. The default form style is Text Input. # TextField() large text type, > 4000, default form s ...

1. Prepare to create an agent protected Object wrapIfNecessary(Object bean, String beanName, Object cacheKey) { //1. Finding Enhancers Object[] specificInterceptors = getAdvicesAndAdvisorsForBean(bean.getClass(), beanName, null); if (specificInterceptors != DO_NOT_PROXY) { //2. Creating Agents Object proxy = createProxy(bea ...

State Pattern: Allows an object to change its behavior when its internal state changes, and the object appears to modify its class. Its alias is Objects for States, and state mode is an object behavioral mode. The state pattern consists of the following roles: Context: The environment class, also known as the context class, is an object with mu ...

Automatic Numbering with CounterCSS counters are like variables. Variable values can be incremented by CSS rules (which track the number of times they are used). To use CSS counters, we will use the following attributes:counter-reset - Create or reset counterscounter-increment - Increase counter valueContent - Insert generated contentcounter() ...

Preface Re-Alpha version of Vue 3.x. There should be Alpha, Beta and other versions in the future. It is expected that the official version of 3.0 will not be released until at least the first quarter of 2020.So we should take advantage of the fact that we haven't yet come out to lay a good foundation for Vue2.x.The basic usage of vue is easy t ...

title: User name duplication checking using native Ajax (1) date: 2018-10-21 17:35:15 tags: [JavaScript,Ajax] --- A review of Ajax It will be a while before you start learning ajax, and then you use it less. Some of them are unfamiliar. Now we just want to realize the function of checking repetition with Ajax. By the way, review Ajax. About Aja ...