add jsdoc

Author: etpinard

src/plots/plots.js

@@ -216,6 +216,16 @@ plots.getSubplotIds = function getSubplotIds(layout, type) {
     return subplotIds;
 };
 
+/**
+ * Get the data trace(s) associated with a given subplot.
+ *
+ * @param {array} data  plotly full data array.
+ * @param {object} layout plotly full layout object.
+ * @param {string} subplotId subplot ids to look for.
+ *
+ * @return {array} list of trace objects.
+ *
+ */
 plots.getSubplotData = function getSubplotData(data, type, subplotId) {
     if(plots.subplotsRegistry[type] === undefined) return [];