Accessing and modifying global variables

In order to interact with a script, it is useful to be able to modify and retrieve the values of global variables.

For example, say we have the following javascript file (c:\test.js):

interop = interop + 5

The following c# code initializes, then outputs the value of the "interop" variable.

var engine = new Jurassic.ScriptEngine();
engine.SetGlobalValue("interop", 15);
engine.ExecuteFile(@"c:\test.js");
Console.WriteLine(engine.GetGlobalValue<int>("interop"));

This code outputs "20" to the console.

Note that you can only set the value of a variable to a supported type.

Next tutorial: Creating objects and arrays