Generates a CSS selector for the links of a networkgraph series.
A network graph draws its nodes as ordinary markers and its links as bare
<path> elements (NetworkgraphPoint#renderLink), and unlike the sankey
family it gives the links no class of their own — both end up carrying only
highcharts-point. The nodes are the ones Highcharts marks, via the
highcharts-node class it puts on every node it creates, so the links are
what is left once those are excluded.
Excluding by class rather than relying on document order is deliberate:
nodes render into series.markerGroup and links into series.group, two
sibling elements that both carry highcharts-series-N, so which of them a
query reaches first is a fact about group creation rather than about the
data.
Generates a CSS selector for the links of a networkgraph series.
A network graph draws its nodes as ordinary markers and its links as bare
<path>elements (NetworkgraphPoint#renderLink), and unlike the sankey family it gives the links no class of their own — both end up carrying onlyhighcharts-point. The nodes are the ones Highcharts marks, via thehighcharts-nodeclass it puts on every node it creates, so the links are what is left once those are excluded.Excluding by class rather than relying on document order is deliberate: nodes render into
series.markerGroupand links intoseries.group, two sibling elements that both carryhighcharts-series-N, so which of them a query reaches first is a fact about group creation rather than about the data.