SciChart.js ships with ~40 JavaScript Chart Examples which you can browse, play with, view the source code and see related documentation. All of this is possible with the SciChart.js Examples Suite, which ships as part of the SciChart.js SDK
Demonstrates how to create a JavaScript Fan Chart using SciChart.js, High Performance JavaScript Charts
Demonstrates how to create a JavaScript Fan Chart. This chart type can be used for visualizing forecasting or estimation figures and can be achieved in SciChart.js using several Band Series overlaid with varying opacity.
As well as stroke, you can set strokeThickness, isVisible properties to change how the series is rendered.