Java business verification tool implementation

1, Background In our daily interface development process, we may have to face some slightly more complex business logic code writing. Before executing the real business logic, we often need to carry out a series of pre verification work, which can be divided into parameter validity verification and business data verification. Parameter validity ...

Posted by mahenderp on Wed, 17 Jun 2020 04:34:10 +0200

Common methods of js arrays you don't know

Analysis of Common Methods of js Array Arrays are also object data types and consist of key-value pairs var ary = [12,23,34]; one-dimensional array /* *Structure * 0:12 * 1:23 * 2:34 * length: 3 */ 1. Number as index (attribute name), index increases from 0 2. There is a length property that stores the le ...

Posted by Kurt on Wed, 17 Jun 2020 03:57:25 +0200

Native Js to realize automatic and seamless carousel graph

javascript implementation of automatic seamless rotation chart 1. Implementation principle The principle of the implementation of the rotation chart is to use a large box group container, which contains a small box for moving. The small box contains pictures to be rotated. The pictures are horizonta ...

Posted by chet23 on Tue, 16 Jun 2020 10:21:07 +0200

HTML5. Notes. Cases

HTML 1, html introduction 1. What is HTML? HTML:hyper text Makrup language hypertext markup language is composed of various tags, which are used to make web pages and tell browsers how to display pages 2. Function Make web pages, control the display of web pages and content Insert picture, musi ...

Posted by gruzaw on Tue, 16 Jun 2020 10:07:59 +0200

Understand this keyword thoroughly

Compared with other languages, the performance of this keyword of function in JavaScript is slightly different. In addition, there will be some differences between strict mode and non strict mode. catalog 1. Global environment 2. Function (in operation) environment 3.call and apply 4. bind metho ...

Posted by jibster on Tue, 16 Jun 2020 09:36:53 +0200

Vue property decorator

Introduction: In this section, we will continue to analyze a vue-property-decorator First of all, you can see an introduction of its official website: This library fully depends on [vue-class-component](https://github.com/vuejs/vue-class-component), so please read its README before using this library. ...

Posted by jodyanne on Mon, 15 Jun 2020 07:00:54 +0200

Released by Dcat Admin v1.5.0, it is a high value background system building tool, adding cool dark mode theme

Dcat Admin Dcat Admin Is based on laravel-admin The second development of the background system construction tool, only a small amount of code can quickly build a functional high value background system. Built in rich back-end common components, out of the box, let developers bid farewell to miscellaneous HTML code, very friendly to back-end de ...

Posted by misty on Mon, 15 Jun 2020 06:27:10 +0200

Implement an RPC framework one by one--Learn java spi

Preface It's a good idea to understand the java spi(service provider interface) mechanism before going into dubbo source code. Simply put, spi can help us load the interface implementation classes described in the specified file. Hmm... That's it? Isn't that easy, even though I'm a vegetable melon, I know it Class.forName Oops~Let's study it th ...

Posted by wrequed on Mon, 15 Jun 2020 03:44:49 +0200

Mybatis framework learning delay loading

catalog Delay loading Implement delayed loading Delay loading using allocation Using Collection to delay loading Delay loading It is to load data when it is needed, and not to load data when it is not needed. Lazy loading is also called lazy loading Advantages: query from single table first, ...

Posted by theDog on Sun, 14 Jun 2020 11:24:43 +0200

Alibaba cloud [teacher class] Java object-oriented development 54 ~ 56: inherited definition and use

Alibaba cloud [teacher class] Java object-oriented development 54 ~ 56: inherited definition and use Derivation of inheritance problem Implementation of inheritance Inherit usage restrictions Call constructor Single inheritance: a subclass can only inherit one parent Subclass inherits all the struct ...

Posted by Grant Holmes on Sun, 14 Jun 2020 07:00:04 +0200