How to use Ajax to detect real-time & quot; username, mailbox, etc. & whether quot; already exists
This article focuses on "how to use Ajax real-time detection" user name, mailbox, etc. "whether it already exists", interested friends may wish to take a look. The method introduced in this paper is simple, fast and practical. Let's let the editor take you to learn "how to use Ajax to detect real-time" user names, mailboxes, etc., "whether they already exist"!
The principle flow chart of using Ajax technology to detect the existence of a user name:
Screenshot of the final result:
The copy code is as follows:
Ajax detect user name
User name:
