The login interface verification shows undefined, please solve it.
The login interface prompts undefined when submitting, but the ajax code feels the same as what the teacher wrote. I don’t know where the error is.
The login interface prompts undefined when submitting, but the ajax code feels the same as what the teacher wrote. I don’t know where the error is.
星星（王海兴）2020-05-05 21:43:55
I found the problem after reading the teacher’s answers to others. I’m sorry to bother you. I made a typo myself.