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Self-study IT network Linux load balancing video tutorial

Course Intermediate 11360

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 17663

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 11379

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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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

CSS Grid: Create new row when child content overflows column width

I have a two column layout based on CSS grid. When the content of the second column exceeds 1fr I want to create a new row. As it currently stands, the content simply overflows the column. One requirement of this layout is that the items in the right menu column are in one row. I achieve this with: .right-menu{...grid-auto-flow:columndense;...} If I remove the grid-auto-flow attribute, the overflow stops. However, the items are now stacked into multiple rows, which is not what I want. I also tried converting .ri

2023-09-05 15:18:28

PHP full text search functionality using AND, OR and NOT operators

Newbie question: I'm trying to implement a full text search on a search string using php and eloquent. $searchstring="+(victimsuspect)+crime-covid";$searchresult=RssItem::whereRaw("MATCH(description)AGAINST('$searchstring'INBOOLEANMODE)")->ge

2023-09-05 15:06:32

Shortest way to convert all PHP types to string

I'm writing a general system that I hope can one day be applied to fields like medicine (i.e. it's "scientific"). I think the best way is to represent all the data in php with strings (true will be "true", false will be "false" and so on). The reason for this is that in php any value has a unique string representation (such as the php code itself). I post this question to speed up the design process of this program. Some values are easily converted to strings: numbers, booleans, etc. Some are not easy: objects, arrays, resources. I think the transfer object and

2023-09-05 15:34:44

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A simple way to beautify checkboxes, radios radio buttons and sliding buttons with pure Css code

Course Introduction：We know that CSS can beautify the front-end page. In this article, we will share with you the method of beautifying checkbox, radios and sliding buttons with pure CSS code. We hope it can help you.

2017-12-13 comment 0 2942

jQuery imitates radio button selection effect example code

Course Introduction：I just started learning jquery, and it was very troublesome to beautify the buttons in some css forms at work, so I thought about using jquery to replace them. jquery for check boxes is very easy, it is a simple style switching effect, just use the toggleClass() method. I never knew how to do the radio button box before, because if one of the radio button boxes is selected, the styles of the others must be removed. If the two radio button boxes are in the same level, use siblings() to find the other ones directly.

2017-03-31 comment 0 1736

Investigate how jQuery handles checking and deselecting checkboxes

Course Introduction：jQuery is a popular JavaScript library used to simplify DOM operations, event handling, animation effects, etc. in web development. In web pages, checkboxes are a common form element used to enable users to select multiple options. This article will explore how to use jQuery to handle checkbox selection and deselecting operations, and provide specific code examples. 1. Basic knowledge of check boxes In HTML, check boxes are represented as follows:

2024-02-26 comment 0 1157

Detailed explanation of css3 beautification radio button radio example

Course Introduction：This pure CSS3 method of beautifying radio button radio is suitable for the following situations: 1. It is compatible with IE9 and above. If it needs to be compatible with IE8, you need to write an IE hack to remove the style. 2. It only supports radio button radio because the radio button selects the style. The circle can be made with CSS, but the checkbox checkbox selection effect requires an image or icon font library 3. No JS is required to support the switching effect. The following picture is the final rendering: HTML code: <label for="man" class="rad

2017-06-30 comment 0 2020

How to check a checkbox using JavaScript

Course Introduction：JavaScript is a scripting language that is generally used to handle tasks such as interaction, dynamic effects, and form validation in web pages. Among them, check box verification is an essential function, especially when submitting a form, it is necessary to ensure that the user fills in the necessary options, otherwise the data will be missing or incomplete. This article will introduce how to use JavaScript to check checkboxes. 1. Get the checkbox object In JavaScript, there are many ways to get the checkbox object. Among them, the most common way is to use the get of the document object

2023-04-25 comment 0 653

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