zentao/extension/max/opportunity/js/importfromlib.ui.js

$(document).off('click', '.batch-btn').on('click', '.batch-btn', function()
{
    const dtable = zui.DTable.query($(this).target);
    const checkedList = dtable.$.getChecks();
    if(!checkedList.length) return;

    const form = new FormData();
    checkedList.forEach((id) => form.append('opportunityIdList[]', id));

    $.ajaxSubmit({url: $(this).data('url'), data: form});
});