【Gantt-elastic】 可以同一行显示多任务吗？

可以的，参见：https://github.com/neuronetio/gantt-elastic/pull/69

添加“group”任务类型和组件，并在group中的tasks上赋值一个数组。

模型样例：

{
    id: 1,
    label: 'Make some noise',
    user:
        '<a href="https://www.google.com/search?q=John+Doe" target="_blank" style="color:#0077c0;">John Doe</a>',
    start: getDate(-24 * 5),
    duration: 15 * 24 * 60 * 60 * 1000,
    percent: 85,
    type: 'project',
  },
{
    id: 2,
    label: 'Group',
    user: '<a href="https://www.google.com/search?q=Clark+Kent" target="_blank" style="color:#0077c0;">Clark Kent</a>',
    start: getDate(-24 * 2),
    duration: 6 * 24 * 60 * 60 * 1000,
    percent: 25,
    type: 'group',
    tasks: [
      {
        id: 21,
        label: 'Group subtask 1',
        user: '<a href="https://www.google.com/search?q=Clark+Kent" target="_blank" style="color:#0077c0;">Clark Kent</a>',
        start: getDate(-24 * 2),
        duration: 2 * 24 * 60 * 60 * 1000,
        percent: 50,
        type: 'project',
      },
      {
        id: 22,
        label: 'Group subtask 2',
        user: '<a href="https://www.google.com/search?q=Clark+Kent" target="_blank" style="color:#0077c0;">Clark Kent</a>',
        start: getDate(24 * 2),
        duration: 2 * 24 * 60 * 60 * 1000,
        percent: 50,
        type: 'task',
      },
    ],
  },