session technology, EL, JSTL

catalogue 1, session Technology definition: Species difference (connotation): Creation and acquisition of session Syntax analysis of access and deletion of session value Case: 2, EL Why use EL? definition: Species difference (connotation): EL syntax: EL syntax - value by variable name Case: Jump to a jsp through the servlet and ...

Posted by luzlin on Tue, 21 Sep 2021 21:38:07 +0200

[Mid Autumn Festival] simulate the revolution of planets in the solar system

preface Last [Mid Autumn Festival] realize the revolution of sun, earth and moon in pure CSS I dug a pit to simulate the revolution of the planets in the solar system around the sun. Today I'll fill the pit. There are only eight planets in the solar system: Mercury, Venus, earth, Mars, Jupiter, Saturn, Uranus and Neptune. Originally there w ...

Posted by AnnieKay on Tue, 21 Sep 2021 12:04:44 +0200

Several ways to develop and modify the source code of webpack plug-in

preface Webpack is an indispensable tool in our daily work. It is inevitable that sometimes we need to personalize the code compiled by webpack, so it needs to be completed by webpack plug-in or modifying its code. This article focuses on some ways of developing and modifying the source code of webpack plug-in. I wrote it a long time ago webpa ...

Posted by apoc- on Tue, 21 Sep 2021 11:49:05 +0200

JS design pattern - structural design

Structural design pattern Structural design patterns focus on how to combine classes or objects into larger and more complex knot structures to simplify design 1, Appearance mode Appearance mode: it provides a more advanced unified interface for a group of complex subsystem interfaces, which makes the results of the subsystem easier to a ...

Posted by angel1987 on Tue, 21 Sep 2021 06:15:55 +0200

WEB front end optimization -- HTML/CSS optimization

This series of articles is organized, recorded and expanded by the book efficient front end - Web efficient programming and optimization practice. Optimization 1: don't use JS for problems that can be solved with HTML/CSS Several cases are introduced 1.1 navigation highlight This case is not an ordinary mouse to highlight, but highlight ...

Posted by Tchelo on Mon, 20 Sep 2021 22:08:46 +0200

September 14, 2021 -- Basic JavaScript syntax

1, JavaScript overview What is JavaScript? Is an object-based and event driven client scripting language. Official concept: This is a cross platform scripting language Platform: refers to the operating environment, which generally refers to the operating system. Cross platform means that it can run in various environments. Scripting l ...

Posted by met0555 on Mon, 20 Sep 2021 05:50:23 +0200

HTML5 basic learning

1, Structure of HTML pages 1. Basic framework of HTML <html>Web page as a whole     <head>         <title>Page title</title>     </head>     <body>Theme of web page</body> </html> 2. Structure of HTML tags < tag name attribute name = attribute value > content < / tag name > 2 ...

Posted by mikeylikesyou on Sun, 19 Sep 2021 19:46:27 +0200

Summary of all array methods (APIs)

Methods (APIs) for all arrays of directories Array method of ES3 join(); Purpose: to convert an array to a stringWhether to change the original array: return a new string without changing the original array let arr = ["a","b","c","d","e"]; let arr1 = arr.join(); console.log(arr1); // a,b,c,d,e console.log(arr); // ["a", "b&quo ...

Posted by pbeerman on Sat, 18 Sep 2021 14:02:39 +0200

Notes on JS

——JS code should be written to the script tag   Control the browser to pop up a warning box   alert("first JS code"); Let the computer output a content in the page   document.write() can output a content to the body Output a content console.log() to the console; You can write js code into the onclick attrib ...

Posted by inferium on Sat, 18 Sep 2021 12:00:30 +0200

Understanding of a paragraph in the reorganization of Android Compose

Do not rely on the side effects of executing composable functions, as reorganization of functions may be skipped. If you do this, users may encounter strange and unpredictable behavior in your application. Side effects are any changes that are visible to the rest of the application. For example, the following operations are all dangerous side e ...

Posted by dgray on Sat, 18 Sep 2021 05:20:27 +0200