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Self-study IT network Linux load balancing video tutorial

Course Intermediate 11220

Course Introduction："Self-study IT Network Linux Load Balancing Video Tutorial" mainly implements Linux load balancing by performing script operations on web, lvs and Linux under nagin.

Shangxuetang MySQL video tutorial

Course Advanced 17566

Course Introduction："Shangxuetang MySQL Video Tutorial" introduces you to the process from installing to using the MySQL database, and introduces the specific operations of each link in detail.

Band of Brothers front-end example display video tutorial

Course Advanced 11276

Course Introduction："Brothers Band Front-end Example Display Video Tutorial" introduces examples of HTML5 and CSS3 technologies to everyone, so that everyone can become more proficient in using HTML5 and CSS3.

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Convert JavaScript regular expression to PHP

I know this question has been asked about a dozen times, but technically it's not a scam (check the other questions if you like) ;) Basically, I have a Javascript regex to check with for the front-end validation of the email address, and I use CodeIgniter to double-check on the back-end in case the front-end validation doesn't work properly (browser issue) for example. ) This is a fairly long regex and I don't know where to start converting it manually. I'm looking for a tool to convert JS regex to PHP regex

2023-10-23 22:58:33

Use image sets to implement fallback background images without relying on javascript

I'm fairly new to front-end and CSS. I'm trying to add a background-image and load .avif files if they are supported. Otherwise fall back to .png files. I'm wondering if it's possible to do this without javascript and without loading all the images without affecting page speed. I'm running Chrome 107.0.5304.110, ios 16.1 in (mostly) the simulator (I know older versions of ios don't support avif, but the latest ones do. Would love to be able to use both) and Fi

2024-03-30 11:00:34

Ways to fix issue 2003 (HY000): Unable to connect to MySQL server 'db_mysql:3306' (111)

I recently tried to containerize my FastAPIPython server (also for replication/doubling purposes). Before, I had just a MySQL server in a Docker container and everything was fine, but when I also made my web server a service, it couldn't connect to the MySQL server, so now the application doesn't work. Below is the code snippet of the server database initialization connector in the application fromfastapiimportFastAPIimportmysql.connectorapp

2023-09-05 11:18:47

Experiment with sorting after query limit

So this is my first question here, please forgive me if something is wrong. I'm trying to make a sort query based on constraints. So there is a Customers table with 90 records. I want to first perform a query limited to 3 records, and then sort the results of this query by a column called ContactName. I think this might be a nested query. Nested queries run fine in SQLServer, but don't know how to implement it in MySQL. Limit query: Select*fromcustomerslimit

2023-09-05 14:46:42

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Incrementally fixing lots of ESlint errors in a clean way with ESlint Nibble

Course Introduction：As our team is growing, we need more functional and aesthetic rules to keep our codebase less error-prone and more consistent. Fortunately, both our backend and frontend use JavaScript (with the same version of TypeScript) so those changes make a big

2024-11-19 comment 0 217

Front-end engineers' JavaScript development skills and experience sharing

Course Introduction：Front-end engineers share their JavaScript development skills and experience. In recent years, with the rapid development of the Internet, the demand for front-end engineers has also increased. As the core language of front-end development, JavaScript plays an important role in front-end development. As a front-end engineer, I have accumulated some JavaScript development skills and experience in many years of practice, and I will share them with you now. Understand JavaScript basics before you start learning and using JavaScript

2023-11-04 comment 0 1092

Enforcement of function keyword arguments in Python

Course Introduction：Before starting in my new role a couple of months ago, it had been a very long time since I had programmed in Python. Incidentally, I kept working in roles over the past several years that involved either full-stack Javascript or mostly Javascript w

2024-10-22 comment 0 806

Explore how to use Node.js front-end source code

Course Introduction：Node.js is a very popular JavaScript runtime environment that makes it possible to use JavaScript on the server side. Moreover, Node.js development is also very suitable for front-end developers. Therefore, in front-end development, we can often see Node.js. In this article, we will explore how to use Node.js front-end source code. 1. Introduction to Node.js front-end source code For front-end developers, Node.js front-end source code is a very important part. Node.js front

2023-04-05 comment 0 799

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