Cleaner partial solution

partial-solution-3.jsx

render() { // render method of component
// ...
<div className={`column-icons-${numberOfButtons}`}
    { canHideColumns && renderHideColumnsTrigger() }
    { canSort && renderSortingIndicator() }
    { canSearch && renderSearchTrigger() }
    { canRemoveColumns && <RemoveColumnButton /> }
    { canAddColumns && <AddColumnButton }
</div>
// ...
}