An input box, enter a text to match the lower-level user name; for example, enter a, the bottom will prompt aaa, a22, a222, asd, axxx and other user names
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走同樣的路，發(fā)現(xiàn)不同的人生
This is based on reading the contents of the database
1. When you enter content in the input box, an ajax request is initiated based on the keyup event. Get relevant data from the backend and return it to the frontend
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