We just released version 1.4.27 of jsreports, and it includes big improvements to report rendering performance. HTML rendering of reports with millions of elements is up to 200% faster, and reports with many nested subreports are up to 500% faster. PDF export is 300-500% faster. Good stuff! We will continuing to add to these performance improvements over time.
If you have a report with hundreds of thousands of sections being rendered in HTML, you can improve scrolling performance by setting
enableVirtualRender: true as a config option when calling
Lots more to come on the features front, but it’ll have to wait for a future blog post.