The relationship between Highcharts classes is very simple and obvious. A chart is composed of five different classes—Chart, Axis, Series, Point, and Renderer. Some of these classes contain an array of lower-level components and an object property to back-reference to a higher level-owner component. For example, the Point class has the series property pointing back to the owner Series class. Each class also has a set of methods for managing and displaying its own layer. In this chapter, we will focus on the set of APIs for dynamically modifying charts. The following class diagram describes the association between these classes:

The Chart class is the top level class representing the whole chart object. It contains method calls to operate the chart as a whole—for example, exporting the chart into SVG or other image formats and setting the dimension of the chart. The Chart class has multiple arrays of Axis and Series objects; that is, a chart can have...