NiL.JS

Open source ECMAScript 6.0 (ES2015) (JavaScript) engine. Licensed under BSD 3-Clause License.

 var context = new Context(); 
 context.Eval(@"console.log( 
 `This is a JavaScript engine written in C#. 
 This engine can perform js code on .NET 4 and 4.5, Universal Windows Platform and .NET Core`)"); 

What is Isolated Global Context?
Other Examples

NuGet Package for .NET 4, .NET 4.5 and UWP
NuGet Package for .NET Core