How does DataTables get data from the background?

how does DataTables get data from the background?
how should his js file be written?

Apr.03,2021

$('-sharpdataTable').DataTable({
    columns: [
    ],
    ajax: {
      url: url,
      type: 'POST',
      dataType: 'json',
      contentType: 'application/json',
      data(d) {
        // 
      },
      dataFilter(result) {
        // 
      },
    },
  });
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-64f5-1bef90a-31c68.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1bef90a-31c68.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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