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Self-study IT network Linux load balancing video tutorial

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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

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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

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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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javascript - How to use vue2.0 transition to achieve the effect of moving the mouse up, sliding the QR code out from the outside of the screen, and leaving the QR code and sliding out of the screen.

How to use vue2.0 transition to achieve the effect of moving the mouse up, sliding out the QR code from the outside of the screen, and leaving the QR code to slide out of the screen. The following is the code I wrote, but what I wrote is: move the mouse up, The box is sliding over, but the mouse has not left, but the box has disappeared. Solve.erwe...

2017-05-19 10:30:36

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

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jquery implements the effect of displaying a secondary drop-down menu when the mouse is rolled over_jquery

Course Introduction：This article mainly introduces jquery to realize the effect of displaying a secondary drop-down menu when the mouse is rolled over. This function is realized by operating mouse events and dynamically changing the page style through jquery. It is of great practical value. Friends who need it can refer to it.

2016-05-16 comment 0 1673

Classic_Use js to quickly implement mouse and keyboard selection drop-down menu (detailed code explanation)

Course Introduction：I spent a few hours sorting out the code, how to use js to implement mouse selection and keyboard operation drop-down menu, a very classic practical case. js changes the font color and background when the mouse passes over, and then displays the drop-down menu. Normally, the drop-down menu is hidden.

2018-07-25 comment 0 1670

C# develops WeChat, QR code mouse slides, image shows hidden effect

Course Introduction：When the client WeChat is in the QR code state, when the mouse slides over, a picture of the mobile phone will slide out, from hiding to showing, and from showing to hiding. The effect is very good. The ideas in this article are clearly introduced. Friends who are interested should take a look.

2016-12-20 comment 0 1787

jquery implements smooth secondary drop-down menu effect_jquery

Course Introduction：This article mainly introduces jquery to achieve a smooth secondary drop-down menu effect, which can realize the pop-up secondary drop-down menu when the mouse slides over it. It involves the jquery mouse hover event and the fadeIn and fadeOut event operations to hide and display the page elements. Friends who need it You can refer to it

2016-05-16 comment 0 1403

JS implements moving the mouse up to display pictures or WeChat QR codes

Course Introduction：This article will share with you a piece of js code used to realize the display of pictures or WeChat QR code styles when the mouse is moved. The code is simple and easy to understand, and it is very good. Friends who need it can refer to it.

2017-01-20 comment 0 1576

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