Programmer Group

Scope of four domain objects in Java Web Application (application domain) After the deployment of the whole project, there will only be one application domain object. All clients access the same application domain object, and all dynamic resources of the project also share the same application domain object Request (request domain) Each reque ...

music Dependency: APlayer.js > 1.8.0Meting.js > 1.1.1 The usage of hexo tag aplayer and MeingJS is excerpted from the official website: Chinese documents Start your own personal blog - > https://kartjim.top/2021/10/16/music hexo-tag-aplayer JavaScript based player plug-in github - DIYgod/APlayer Using the aplayer plug ...

1, Syntax and variables (1) . front end third floor (2) Writing position of JS   (3) . output statement   (4) . variable declaration promotion Variable declaration promotion: you can use a variable declared later in advance without throwing an exception Before executing all code, JS has a pre parsing stage, which will pre re ...

catalogue 1. Realization of rotation chart function 4.1 getting elements 1.2 left and right buttons display and hide 1.3 small circle dynamic setting click add class name click picture move 1.4 cloning small li cells 1.5 click the button on the right to scroll the picture 1.6 click the button on the right to change the small circle poi ...

1, Modify the url without refreshing the page Case 1: setting anchor characteristics (taking the code of the tab in bootstrap as an example) Use the anchor mode to switch. When the page is refreshed, it will also be located to the specified page. However, if the page content is too long and the scroll bar appears, the anchor will be locate ...

catalogue         What is outer margin collapse         How to solve the collapse of outer margin         What is an outer margin merge         How to resolve outer margin merging What is outer margin collapse         When two nested relationship block level elements, if the parent element sets the upper outer margin ...

Interface inheritance cannot be implemented in ECMAScript because the function is not signed. ECMAScript only supports inheritance, and its main way to realize inheritance depends on prototype chain. Prototype chain inheritance          Relationship between constructor, prototype chain and instance: eac ...

Secondary development of markdown online editor editor.md demand It is often necessary to publish articles in online forums for publicity, but the writing format of each forum is different, which brings great obstacles to the publication. The recent rise of markdown format has brought good news to the majority of publishers. A document forma ...

Catalog Lists (Ordered and Unordered Lists) 1. Unordered list 2. Ordered List 3. Nesting of lists 2. Forms 1. Primary labels required for tables 2. Details on Form Making 3. Merge of cells (across rows and columns)                             ​ 3. Forms 1. Form Labels 2. Form Control A, input control B, select control: drop-down ...

Project directory and file creation First of all, we don't need to build the project environment. We still directly use the simplest way, that is, the introduction method, to create the project, which makes it convenient for us to test while writing. Create an empty directory named ColorPicker, create a JS file, color-picker.js, then create an ...