Programmer Think

1. Foreword The graduation design project I have done is only basic. There are no outstanding functions. The styles of several modules in the background are the same. They are all tables. 2. Overview The front-end uses the BootStrap framework, and the back-end code is mainly realized by JSP. The main functions include user logi ...

Problem background Recently, the little partner put forward a demand to improve the operability of the background drop-down list. The reason is that there are too many drop-down list options. Each drop-down selection is time-consuming, laborious and error prone. He stubbornly chewed on the front-end knowledge and searched for some information a ...

HTML5 final assignment: love discount e-commerce shopping website design - fresh love discount e-commerce shopping website (5 pages) HTML+CSS+JavaScript HTML web page design about e-commerce - online shopping Common web design topics include individuals, food, companies, schools, tourism, e-commerce, pets, electrical appliances, tea, home, ...

1, Introduction to Nodejs 1. Getting to know NodeJS NodeJS is a javascript running environment based on Chrome V8 engine. 2. Module There are many built-in API modules in NodeJS: fs, path, http, js built-in object, querystring, etc; Cannot operate without DOM and BOM. 3. Learn what NodeJS can do? 1. web application development can be done ...

1.Web process 1.1 software architecture 1. C/S: client / server    cs architecture is built on a dedicated network and generally faces relatively fixed user groups. It can verify permissions at multiple levels, provides a more secure access mode, and has strong control over information security; B/S: Browser / server side The bs ...

catalogue 1. Agent mode 1.1 create project 1.1.1 create project 1.1.2 complete the entry code test 1.1.3 editing UserService 1.1.4 how does the business layer control transactions 1.1.4 business code - problem description 1.2 agency mechanism 1.2.1 characteristics of agent mode 1.2.1 agency characteristics 1.3 dynamic agent JDK mod ...

Container element This element represents an area where other elements are placed. 1. div element No semantics (browsers don't know what's in div) 2. Semantic container element Header: usually used to represent the page header or the article header. Footer: usually used to represent the footer or the end of an article. Article: usually use ...

concept What's promise? It is a constructor and a solution for asynchronous operation. It is generally used to solve callback hell (nested functions) Let's look at a set of codes first // Load picture function loadImg(src) { const p = new Promise( (resolve, reject) => { const img = document.createElement('img'); ...

(final review) Python built-in functions (1) iter method: The iter(object, sentinel) function is used to generate iterators parameter Object – a collection object that supports iteration. sentinel – if the second parameter is passed, the parameter object must be a callable object (for example, a function). At this time, iter create ...

catalogue 4, Pseudo class selector (weight: 001) 1,: link,: hover,: active,: visited 2,: focus (used to select the element that gets the focus) 3,: lang(fr) (special language for matching) 4,: not (selector) (matches each element of non specified element / selector) 5,: root (matching document root element) 6，:first-child，:l ...