Why does the page refresh automatically using the jquery ajax get method?

$(document).on("click","-sharpexport",() => {
        $.get("/workspace/export");
    });

router.get("/export",function(req, res, next){

    var filepath = "/workspace/export/export.mp4"; 

   
    res.download(filepath, err => {
        console.log(err);
        res.sendStatus(404);
    })
});
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1b35562-2bf80.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b35562-2bf80.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
Need Help?