How does the HTML5 drag event prevent dragging to other elements?

When

is dragged onto another element, this file opens by default. Where should this event be prevented?

Mar.13,2021

ondragstart="event.preventDefault();return false;"

document.body.addEventListener("dragover", (event) => {
    event.preventDefault();
});
document.body.addEventListener("drop", (event) => {
    event.preventDefault();
});

event.dataTransfer.setData ('text/plain',')

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-64f5-1b2c3f1-2baf0.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b2c3f1-2baf0.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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