Introduction to the login function

Nowadays, the login function is frequently used. For games, chatting, shopping, watching movies, etc., you must log in first. The interfaces are also varied, but the functions are basically the same, namely username, password, and some have verification codes. As shown in the picture:

The login interface is made using the HTML and CSS functions we learned before. The effect can also be based on personal preferences. .

The next step is to create a database, store user information, link to the database, and retrieve database data for login.

In this chapter, we will take login and registration as an example to do a practical development project to explain the ideas, as well as the specific operation methods and steps.