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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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javascript - Implement the mouse to draw a div frame and obtain the dom element covered by the div

Similar to this effect, move the mouse and pull a div box to select the dom element covered by the div. Do you have any good ideas that can be implemented? The method I came up with is to judge the offsetLeft, offsetTop of the div and the offsetLeft, offsetTop of each element that needs to be selected. If the dom element...

2017-05-19 10:09:21

javascript - How to locate which js is called by an action without interrupting point debugging?

It's easy to write your own code to set breakpoints, and Firebug will jump directly to the breakpoint. However, there is often an annoyance. When looking at other people's code, a lot of js is loaded on it. Since js and jquery are usually event-bound, js actions are not directly written in html tags. At this time: 1. When the mouse passes over an element produced...

2017-06-26 10:58:40

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

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How to determine if the mouse is on an element in jquery

Course Introduction：How jquery determines whether the mouse is on the element: 1. Use the mouseover method to determine whether the mouse is on the element; 2. Use the mouseout method to determine whether the mouse is on the element.

2021-01-07 comment 0 5070

How to determine if the mouse is inside an element with jQuery

Course Introduction：How jQuery determines whether the mouse is within an element: 1. Determine whether the mouse is in the first-level menu. If it is not in the first-level menu, whether it is in the second-level menu; 2. Jquery obtains the mouse position and determines whether the mouse is in a DIV.

2020-12-25 comment 0 7638

jquery implements pop-up layer effect code that can automatically determine the position_jquery

Course Introduction：This article mainly introduces jquery's pop-up layer effect code that can automatically determine the position. It can realize the function of making reasonable judgments and displaying the pop-up layer based on the mouse position. It involves jQuery mouse events and related judgment skills of page element position attributes. What is needed Friends can refer to it

2016-05-16 comment 0 1235

js method to determine whether the mouse position is in a certain div_javascript skills

Course Introduction：This article mainly introduces the method of JS to determine whether the mouse position is in a certain div, involving JavaScript's response to mouse events and related techniques for page element attribute operations. Friends in need can refer to the following

2016-05-16 comment 1 3123

Where are the canvas mouse coordinates?

Course Introduction：How to get mouse coordinates for canvas: 1. Create a JavaScript sample file; 2. Get a reference to the Canvas element and add a listener for mouse movement events; 3. When the mouse moves on the Canvas, the getMousePos function will be triggered; 4. Use The "getBoundingClientRect()" method obtains the position and size information of the Canvas element, and obtains the mouse coordinates through event.clientX and event.clientY.

2023-08-22 comment 0 2869

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