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The Google debugging tool cannot select specific elements of the page when selecting elements_html/css_WEB-ITnose
The Google debugging tool cannot select specific elements of the page when selecting elements_html/css_WEB-ITnose
Z-index problem
The default value of document is 0.
Once this problem occurs, check whether z-index is set for the large background: -1 ;
If this is set, the contents of all set elements will be under the document and cannot be selected. Including that there will be no link clicking, text selection, hover and other effects.
So the way to solve this problem is to remove the z-index:-1; of the background.
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Solutions to the errors reported by MySQL on a specific system version
Apr 08, 2025 am 11:54 AM
The solution to MySQL installation error is: 1. Carefully check the system environment to ensure that the MySQL dependency library requirements are met. Different operating systems and version requirements are different; 2. Carefully read the error message and take corresponding measures according to prompts (such as missing library files or insufficient permissions), such as installing dependencies or using sudo commands; 3. If necessary, try to install the source code and carefully check the compilation log, but this requires a certain amount of Linux knowledge and experience. The key to ultimately solving the problem is to carefully check the system environment and error information, and refer to the official documents.
How to use mysql after installation
Apr 08, 2025 am 11:48 AM
The article introduces the operation of MySQL database. First, you need to install a MySQL client, such as MySQLWorkbench or command line client. 1. Use the mysql-uroot-p command to connect to the server and log in with the root account password; 2. Use CREATEDATABASE to create a database, and USE select a database; 3. Use CREATETABLE to create a table, define fields and data types; 4. Use INSERTINTO to insert data, query data, update data by UPDATE, and delete data by DELETE. Only by mastering these steps, learning to deal with common problems and optimizing database performance can you use MySQL efficiently.
MySQL download file is damaged and cannot be installed. Repair solution
Apr 08, 2025 am 11:21 AM
MySQL download file is corrupt, what should I do? Alas, if you download MySQL, you can encounter file corruption. It’s really not easy these days! This article will talk about how to solve this problem so that everyone can avoid detours. After reading it, you can not only repair the damaged MySQL installation package, but also have a deeper understanding of the download and installation process to avoid getting stuck in the future. Let’s first talk about why downloading files is damaged. There are many reasons for this. Network problems are the culprit. Interruption in the download process and instability in the network may lead to file corruption. There is also the problem with the download source itself. The server file itself is broken, and of course it is also broken when you download it. In addition, excessive "passionate" scanning of some antivirus software may also cause file corruption. Diagnostic problem: Determine if the file is really corrupt
How to solve the problem of missing dependencies when installing MySQL
Apr 08, 2025 pm 12:00 PM
MySQL installation failure is usually caused by the lack of dependencies. Solution: 1. Use system package manager (such as Linux apt, yum or dnf, Windows VisualC Redistributable) to install the missing dependency libraries, such as sudoaptinstalllibmysqlclient-dev; 2. Carefully check the error information and solve complex dependencies one by one; 3. Ensure that the package manager source is configured correctly and can access the network; 4. For Windows, download and install the necessary runtime libraries. Developing the habit of reading official documents and making good use of search engines can effectively solve problems.
Solutions to the service that cannot be started after MySQL installation
Apr 08, 2025 am 11:18 AM
MySQL refused to start? Don’t panic, let’s check it out! Many friends found that the service could not be started after installing MySQL, and they were so anxious! Don’t worry, this article will take you to deal with it calmly and find out the mastermind behind it! After reading it, you can not only solve this problem, but also improve your understanding of MySQL services and your ideas for troubleshooting problems, and become a more powerful database administrator! The MySQL service failed to start, and there are many reasons, ranging from simple configuration errors to complex system problems. Let’s start with the most common aspects. Basic knowledge: A brief description of the service startup process MySQL service startup. Simply put, the operating system loads MySQL-related files and then starts the MySQL daemon. This involves configuration
How to optimize database performance after mysql installation
Apr 08, 2025 am 11:36 AM
MySQL performance optimization needs to start from three aspects: installation configuration, indexing and query optimization, monitoring and tuning. 1. After installation, you need to adjust the my.cnf file according to the server configuration, such as the innodb_buffer_pool_size parameter, and close query_cache_size; 2. Create a suitable index to avoid excessive indexes, and optimize query statements, such as using the EXPLAIN command to analyze the execution plan; 3. Use MySQL's own monitoring tool (SHOWPROCESSLIST, SHOWSTATUS) to monitor the database health, and regularly back up and organize the database. Only by continuously optimizing these steps can the performance of MySQL database be improved.
How to backup and restore database after mysql installation
Apr 08, 2025 am 11:45 AM
There is no absolutely optimal MySQL database backup and recovery solution, and it needs to be selected based on the amount of data, business importance, RTO and RPO. 1. Logical backup (mysqldump) is simple and easy to use, suitable for small databases, but slow and huge files; 2. Physical backup (xtrabackup) is fast, suitable for large databases, but is more complicated to use. The backup strategy needs to consider the backup frequency (RPO decision), backup method (data quantity and time requirement decision) and storage location (off-site storage is more secure), and regularly test the backup and recovery process to avoid backup file corruption, permission problems, insufficient storage space, network interruption and untested issues, and ensure data security.
MySQL installation error solution
Apr 08, 2025 am 10:48 AM
Common reasons and solutions for MySQL installation failure: 1. Incorrect username or password, or the MySQL service is not started, you need to check the username and password and start the service; 2. Port conflicts, you need to change the MySQL listening port or close the program that occupies port 3306; 3. The dependency library is missing, you need to use the system package manager to install the necessary dependency library; 4. Insufficient permissions, you need to use sudo or administrator rights to run the installer; 5. Incorrect configuration file, you need to check the my.cnf configuration file to ensure the configuration is correct. Only by working steadily and carefully checking can MySQL be installed smoothly.
