## ChartSeriesCollectio.count property Returns the number of [ChartSeries](../../chartseries/) in this collection. ```js get count(): number ``` ### Examples Shows how to add and remove series data......categories = [ "Category 1", "Category 2", "Category 3", "Category 4" ];...categories, [ 4.4, 7.0, 3.5, 2.1 ]); expect(chartData.count)...