node.js - express，10次请求之后，status就pending了

Answer 1

You can try adding a timestamp after the request http://www.ajax.com?t=111

Answer 2

I have been testing this problem for a long time. Finally, with the help of a friend, I found the cause of the error. The database connection is not closed. As for why it was 10 times, I'm not sure. I hope someone who knows can tell me. Thank you

 connection.query($sql.search, [start,end,date], function(err, result) {
    res.render('result',{result:'null',user:'',date1:date1,date2:date2,date3:date3,start:start,end:end,temp:temp});
});
在后面加上connection.release();就行了。