Thinkphp+AJAX动态验证用户输入是否合法

With the rapid development of social media, Xiaohongshu has become one of the most popular social platforms. Users can create a Xiaohongshu account to show their personal identity and communicate and interact with other users. If you need to find a user’s Xiaohongshu number, you can follow these simple steps. 1. How to use Xiaohongshu account to find users? 1. Open the Xiaohongshu APP, click the "Discover" button in the lower right corner, and then select the "Notes" option. 2. In the note list, find the note posted by the user you want to find. Click to enter the note details page. 3. On the note details page, click the "Follow" button below the user's avatar to enter the user's personal homepage. 4. In the upper right corner of the user's personal homepage, click the three-dot button and select "Personal Information"

The Local Users and Groups utility is built into Computer Management and can be accessed from the console or independently. However, some users find that local users and groups are missing in Windows 11. For some people who have access to it, the message suggests that this snap-in may not work with this version of Windows 10. To manage user accounts for this computer, use the User Accounts tool in Control Panel. The issue has been reported in previous iterations of Windows 10 and is usually caused by issues or oversights on the user's side. Why are local users and groups missing in Windows 11? You are running Windows Home edition, local users and groups are available on Professional edition and above. Activity

In Ubuntu systems, the root user is usually disabled. To activate the root user, you can use the passwd command to set a password and then use the su- command to log in as root. The root user is a user with unrestricted system administrative rights. He has permissions to access and modify files, user management, software installation and removal, and system configuration changes. There are obvious differences between the root user and ordinary users. The root user has the highest authority and broader control rights in the system. The root user can execute important system commands and edit system files, which ordinary users cannot do. In this guide, I'll explore the Ubuntu root user, how to log in as root, and how it differs from a normal user. Notice

When creating a virtual machine, you will be asked to select a disk type, you can select fixed disk or dynamic disk. What if you choose fixed disks and later realize you need dynamic disks, or vice versa? Good! You can convert one to the other. In this post, we will see how to convert VirtualBox fixed disk to dynamic disk and vice versa. A dynamic disk is a virtual hard disk that initially has a small size and grows in size as you store data in the virtual machine. Dynamic disks are very efficient at saving storage space because they only take up as much host storage space as needed. However, as disk capacity expands, your computer's performance may be slightly affected. Fixed disks and dynamic disks are commonly used in virtual machines

If you want to convert a dynamic disk to a basic disk in Windows 11, you should create a backup first as the process will erase all data in it. Why should you convert dynamic disk to basic disk in Windows 11? According to Microsoft, dynamic disks have been deprecated from Windows and their use is no longer recommended. Additionally, Windows Home Edition does not support dynamic disks, so you will not be able to access these logical drives. If you want to combine more disks into a larger volume, it is recommended to use Basic Disks or Storage Spaces. In this article, we will show you how to convert dynamic disk to basic disk on Windows 11 How to convert dynamic disk to basic disk in Windows 11? In the beginning

Certain folders are not always accessible due to permissions, and in today’s guide we will show you how to access user folders on your old hard drive on Windows 11. The process is simple but can take a while, sometimes even hours, depending on the size of the drive, so be extra patient and follow the instructions in this guide closely. Why can't I access my user folders on my old hard drive? User folders are owned by another computer, so you cannot modify them. You don't have any permissions on the folder other than ownership. How to open user files on old hard drive? 1. Take ownership of the folder and change permissions Find the old user directory, right-click on it and select Properties. Navigate to "An

Many users have been added to the Ubuntu system. I want to delete the users that are no longer in use. How to delete them? Let’s take a look at the detailed tutorial below. 1. Open the terminal command line and use the userdel command to delete the specified user. Be sure to add the sudo permission command, as shown in the figure below. 2. When deleting, be sure to be in the administrator directory. Ordinary users do not have this permission. , as shown in the figure below 3. After the delete command is executed, how to judge whether it has been truly deleted? Next we use the cat command to open the passwd file, as shown in the figure below 4. We see that the deleted user information is no longer in the passwd file, which proves that the user has been deleted, as shown in the figure below 5. Then we enter the home file

Microsoft began rolling out KB2 to the public as an optional update for Windows 503145511H22 or later. This is the first update to enable Windows 11 Moment 4 features by default, including Windows Copilot in supported areas, preview support for items in the Start menu, ungrouping of the taskbar, and more. Additionally, it fixes several Windows 11 bugs, including potential performance issues that caused memory leaks. But ironically, the optional update for September 2023 will be a disaster for users trying to install the update, or even for those who have already installed it. Many users will not install this Wi