The object WebReport from FastReport .Net use jQuery library. You already can use this library in your own project.
To avoid duplication of boot scripts and styles jQuery to the client browser when working with markup Razor, you need to use the following lines in_Layout.cshtml:
instead of the others, which include all jQuery files:
You need to set the property ExternalJquery = true (default false) when you working with ASPX markup. more...