current location：Home > Technical Articles > Daily Programming
- Direction：
- All web3.0 Backend Development Web Front-end Database Operation and Maintenance Development Tools PHP Framework Daily Programming WeChat Applet Common Problem Other Tech CMS Tutorial Java System Tutorial Computer Tutorials Hardware Tutorial Mobile Tutorial Software Tutorial Mobile Game Tutorial
- Classify：
- PHP tutorial MySQL Tutorial HTML Tutorial CSS Tutorial
-
- What is the purpose of using data-* attributes on HTML tags?
- Customdataattributeslikedata-role="button"areusedtostoreextrainformationinHTMLelementsforeasieraccessviaJavaScript.Theyallowdeveloperstoattachsmallbitsofrelateddatadirectlytoelements,suchasitemIDs(data-id),temporarystate(data-state="ac
- HTML Tutorial . Web Front-end 883 2025-06-28 01:07:22
-
- how to connect to mysql database from python on windows
- To connect to the MySQL database from Python on Windows, you need to install the mysql-connector-python or pymysql module and correctly configure the connection parameters and network permissions. 1. Install module: Use pipinstallmysql-connector-python or pipinstallpymysql; 2. Configure connection information: Provide host, user, password and database parameters. It is recommended to manage sensitive information through environment variables or configuration files; 3. Ensure that the database user has remote access rights (such as remote database); 4. Check the firewall settings to ensure that port 3306 is open; 5
- Mysql Tutorial . Database 836 2025-06-28 01:06:50
-
- How to check for replication lag between a master and slave?
- To check the replication delay between master and slave servers, you can achieve it in the following four methods: 1. Use built-in database commands to view the replication status, such as MySQL's SHOWSLAVESTATUS or PostgreSQL related query statements to directly obtain the delay indicator; 2. Use monitoring tools such as Prometheus, Zabbix or PMM to automatically detect and set alarms; 3. Create a heartbeat table at the application layer and update and query regularly to calculate the delay; 4. Troubleshoot whether system resource problems such as network bandwidth, server CPU, disk IO and other systems cause delays. These methods can effectively judge and deal with replication delay issues.
- Mysql Tutorial . Database 339 2025-06-28 01:06:30
-
- How can you minify CSS and why is it important?
- MinifyingCSSimproveswebsiteperformancebyreducingfilesize.Itremovesunnecessarycharacterslikespaces,linebreaks,andcomments,shortensvariablenames,andmaycombinefilestoreduceHTTPrequests.Thisresultsinfasterpageloadtimes,betterperformancescores,improveduse
- CSS Tutorial . Web Front-end 306 2025-06-28 01:03:52
-
- What is the @extend directive in Sass and what are its dangers?
- @extend can share styles in Sass, but it may cause CSS confusion. The core problems are: 1. Selector explosion: generates a large number of combined selectors when expanding multiple classes; 2. Unexpected output: Nested or pseudo-class extensions may generate invalid CSS; 3. Debugging difficulty: It is difficult to distinguish between direct and inherited styles. Mixin or % placeholders should be used first to avoid problems.
- CSS Tutorial . Web Front-end 742 2025-06-28 00:58:21
-
- How can you hide content accessibly?
- Tohidecontentwhilekeepingitaccessible,useCSStechniqueslikethevisually-hiddenclasswithclipandpositionproperties.1.Applyposition:absoluteandcliptomovecontentoff-screenwhilekeepingitavailabletoscreenreaders.2.Useamodernapproachwithclip-pathandwhite-spac
- CSS Tutorial . Web Front-end 845 2025-06-28 00:53:21
-
- How to preview the effect of PHP code in real time?
- To achieve real-time preview of PHP code effects, you need to build a local development environment and use it with tools. 1. Use XAMPP, WAMP or MAMP to build a local server, place the PHP file in the specified directory and access it through localhost, and refresh the page after modification to view the results; 2. Use VSCode's LiveServer plug-in or PHPStorm to save and refresh the browser automatically; 3. Use var_dump() or print_r() to debug output variable information in combination with browser developer tools to assist in troubleshooting problems. Although these methods are not completely real-time, they can quickly feedback the results and improve development efficiency.
- PHP Tutorial . Backend Development 866 2025-06-28 00:51:21
-
- What is the impact of overly complex CSS selectors on performance?
- Using an overly complex CSS selector can affect performance because the browser parses the selector from right to left, resulting in an increase in lookup and backtracking operations. For example, .sidebarullia:hover needs to check each link, list item, unordered list and sidebar container layer by layer. The deeper the nesting, the more specific the selector, and the heavier the processing burden. In addition, high specificity makes CSS difficult to maintain, forcing developers to use more complex rules to override the original style, and even rely on!important. To improve efficiency, deep nesting, use semantic class names (such as .nav-link), reduce the use of combinators, and use tools to audit verbose selectors. Although small websites have little impact, on large pages or mobile devices, the simplified selector can be displayed.
- CSS Tutorial . Web Front-end 160 2025-06-28 00:43:21
-
- How do I use prepared statements to prevent SQL injection attacks?
- UsingpreparedstatementsisthemosteffectivewaytopreventSQLinjectionattacks.1.TheyworkbyseparatingSQLlogicfromdata,ensuringuserinputisalwaystreatedasdata,notexecutablecode.2.Thismethodusesplaceholders(like?or:username)andbindsactualvalueslater,preventin
- PHP Tutorial . Backend Development 661 2025-06-28 00:40:41
-
- mysql tutorial on command line basics
- Using command-line operations after logging in to MySQL is the basis. 1. Use mysql-uroot-p to log in, exit with exit; or Ctrl D; 2. Use SHOWDATABASES to view the database; use USEyour_database_name to enter the database; 3. Use CREATEDATABASEnew_database_name to create the database; use DROPDATABASEdatabase_name to delete; 4. Use SHOWTABLES to view the table structure; use DESCRIBEtable_name to query the data; use SELECTFROMtable_name to avoid in production environments
- Mysql Tutorial . Database 513 2025-06-28 00:29:21
-
- What is a good video CSS tutorial on YouTube?
- TofindasolidCSSvideotutorialonYouTube,prioritizeup-to-datecontent,clearexplanations,andhands-oncoding.1.Choosebeginner-friendlyseriesfromchannelslikeTraversyMediaorTheNetNinjathatwalkthroughrealprojectsandcoverFlexbox,Grid,andresponsivedesign.2.Ensur
- CSS Tutorial . Web Front-end 791 2025-06-28 00:27:50
-
- How to create a responsive navbar CSS tutorial
- To create a responsive navigation bar, the key is to use Flexbox layouts and media queries. 1. Use HTML to build a clear structure, including logo, link list and hamburger buttons; 2. Use Flexbox to implement horizontal arrangement on the desktop; 3. The mobile terminal hides the menu through media query and displays the hamburger buttons, combining JS control to expand and close; 4. Add transition animations to improve the interactive experience, and optimize the style details under different devices.
- CSS Tutorial . Web Front-end 130 2025-06-28 00:20:10
-
- How to run PHP files with Nginx?
- To run PHP files, you need to install Nginx and PHP-FPM and configure FastCGI forwarding. 1. Install nginx, php, and php-fpm; 2. Edit Nginx site configuration files, set location block processing .php files and specify fastcgi_pass; 3. Enable configuration, test and restart Nginx; 4. Create phpinfo page to verify whether it is successful; 5. Pay attention to permissions, version differences and log troubleshooting problems.
- PHP Tutorial . Backend Development 293 2025-06-28 00:18:10
-
- How to get or set html attributes with JavaScript?
- To get or set the properties of HTML elements through JavaScript, you usually use the getAttribute() and setAttribute() methods. 1. Use getAttribute() to get the attribute, and pass the attribute name to read the value, such as element.getAttribute('href'); 2. Use setAttribute() to setAttribute() to pass the attribute name and string value in turn, such as element.setAttribute('href','https://new-url.com'), if the attribute exists, it will be overwritten, and if it does not exist, it will be created; 3. Use removeAt to remove the attribute.
- HTML Tutorial . Web Front-end 335 2025-06-28 00:17:41
Tool Recommendations
jQuery enterprise message form contact code
jQuery enterprise message form contact code is a simple and practical enterprise message form and contact us introduction page code.
form button
2024-02-29
HTML5 MP3 music box playback effects
HTML5 MP3 music box playback special effect is an mp3 music player based on HTML5 css3 to create cute music box emoticons and click the switch button.
Player special effects
2024-02-29
HTML5 cool particle animation navigation menu special effects
HTML5 cool particle animation navigation menu special effect is a special effect that changes color when the navigation menu is hovered by the mouse.
Menu navigation
2024-02-29
jQuery visual form drag and drop editing code
jQuery visual form drag and drop editing code is a visual form based on jQuery and bootstrap framework.
form button
2024-02-29
Organic fruit and vegetable supplier web template Bootstrap5
An organic fruit and vegetable supplier web template-Bootstrap5
Bootstrap template
2023-02-03
Bootstrap3 multifunctional data information background management responsive web page template-Novus
Bootstrap3 multifunctional data information background management responsive web page template-Novus
backend template
2023-02-02
Real estate resource service platform web page template Bootstrap5
Real estate resource service platform web page template Bootstrap5
Bootstrap template
2023-02-02
Simple resume information web template Bootstrap4
Simple resume information web template Bootstrap4
Bootstrap template
2023-02-02
Cute summer elements vector material (EPS PNG)
This is a cute summer element vector material, including the sun, sun hat, coconut tree, bikini, airplane, watermelon, ice cream, ice cream, cold drink, swimming ring, flip-flops, pineapple, conch, shell, starfish, crab, Lemons, sunscreen, sunglasses, etc., the materials are provided in EPS and PNG formats, including JPG previews.
PNG material
2024-05-09
Four red 2023 graduation badges vector material (AI EPS PNG)
This is a red 2023 graduation badge vector material, four in total, available in AI, EPS and PNG formats, including JPG preview.
PNG material
2024-02-29
Singing bird and cart filled with flowers design spring banner vector material (AI EPS)
This is a spring banner vector material designed with singing birds and a cart full of flowers. It is available in AI and EPS formats, including JPG preview.
banner picture
2024-02-29
Golden graduation cap vector material (EPS PNG)
This is a golden graduation cap vector material, available in EPS and PNG formats, including JPG preview.
PNG material
2024-02-27
Home Decor Cleaning and Repair Service Company Website Template
Home Decoration Cleaning and Maintenance Service Company Website Template is a website template download suitable for promotional websites that provide home decoration, cleaning, maintenance and other service organizations. Tip: This template calls the Google font library, and the page may open slowly.
Front-end template
2024-05-09
Fresh color personal resume guide page template
Fresh color matching personal job application resume guide page template is a personal job search resume work display guide page web template download suitable for fresh color matching style. Tip: This template calls the Google font library, and the page may open slowly.
Front-end template
2024-02-29
Designer Creative Job Resume Web Template
Designer Creative Job Resume Web Template is a downloadable web template for personal job resume display suitable for various designer positions. Tip: This template calls the Google font library, and the page may open slowly.
Front-end template
2024-02-28
Modern engineering construction company website template
The modern engineering and construction company website template is a downloadable website template suitable for promotion of the engineering and construction service industry. Tip: This template calls the Google font library, and the page may open slowly.
Front-end template
2024-02-28
