Javascript Interpreter for .NET

Question

I've got a scenario where I need to run a Javascript interpreter in a .NET application. This is going to be running on Windows Phone 7, so it needs to be Compact Framework-compliant and because it probably won't be pre-packaged for Windows Phone source could help there.

Also the licensing can be an issue. We looked at using Jint which is under an MIT license, but it uses Antlr, which is under a BSD license (as I understand it Jint is in non-compliance for not redistributing the Antlr copyright and conditions). Any other alternatives out there?

Hounshell · Accepted Answer · 2011-06-02 21:34:49Z

5

It's been some effort, but I've actually been able to retrofit Jint to work on WP7. There was a bit of reflection that was easily rewritten (mostly to marshal calls from JS to .NET objects), and a couple bugs that needed to be patched, but in the end it seems to be working.

Hopefully I'll be able to submit these back to the Jint project once I have some spare time.

answered Jun 2, 2011 at 21:34

Hounshell

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2 Comments

Stuart Over a year ago

Do you have any information on this - I'm starting to try the same approach and if there's any shortcut available it would be very helpful - me[at]slodge[dot]com

SimonSimCity Over a year ago

Just for my own record, here's a fork which also is also based on jint which claims to make it compatible to the .NET 3.5 compatible framework: github.com/flts/jint

Einar Egilsson · Accepted Answer · 2011-03-21 20:06:23Z

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http://jurassic.codeplex.com

Although I don't know if it is Compact Framework compliant.

answered Mar 21, 2011 at 20:06

Einar Egilsson

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Dave Van den Eynde Over a year ago

Well, it runs on Silverlight, so you might be able to adapt it to work on WP7.

Hounshell Over a year ago

It compiles the code on the fly. The whole Reflection Emit namespace is unavailable on WP7

John B. Lambe Over a year ago

This has since moved to github.com/paulbartrum/jurassic .

Community · Accepted Answer · 2017-05-23 12:06:38Z

2

You can make JavaScript calls using the web browser control. It requires no additional libraries. You will need to do a little hacking around to make the control invisible, retrieving data etc, but it should do the trick.

Or you can try this project:

Javascript .NET integrates Google's V8 Javascript engine and exposes it to the CLI environment. Javascript .NET compiles (at runtime) and executes scripts directly from .NET code. It allows CLI objects to be exposed and manipulated directly from the executed Javascript.

edited May 23, 2017 at 12:06

CommunityBot

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answered Mar 21, 2011 at 20:07

Byron Whitlock

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2 Comments

Stuart Over a year ago

Javascript.Net is no good for WP7 - it's a C++ interop library and it also need V8 (Chrome) installed to make it work.

Hounshell Over a year ago

I should have clarified, I'm actually looking for something I can run under Silverlight and XNA, which rules the WebBrowser control out.

Hounshell · Accepted Answer · 2012-03-14 17:15:53Z

1

Since this question was asked, Jurassic has been released. This is a .NET Javascript interpreter that works on the full CLR as well as the phone (or so they claim).

I haven't started to migrate to it yet, so I don't know if it works, but here it is for any of you that are interested.

answered Mar 14, 2012 at 17:15

Hounshell

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Stuart · Accepted Answer · 2011-03-22 07:43:22Z

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As Bryan says, you can run your Javascript in the web browser control if you want to - I think this might be your only option if you do need to run JS.

There is also an effort underway to develop IronJS - https://github.com/fholm/IronJS - but I don't expect this to be ready for WP7 soon - nor do I expect it to be fully functional there.

If you could switch to a different scripting language - Ruby - then IronRuby is available on the phone (see the iron7 pics and videos for what can be done with it).

answered Mar 22, 2011 at 7:43

Stuart

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gatapia · Accepted Answer · 2011-06-02 03:36:04Z

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You should try: https://github.com/gatapia/js.net

I haven't tried on WP7 but may work?

answered Jun 2, 2011 at 3:36

gatapia

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Hounshell Over a year ago

From the comments: "A wrapper around V8: Include js.net.dll in your project and you can run JavaScript straight from your .Net programs." It uses a native DLL with PInvoke wrapped around it.

gatapia Over a year ago

@Hounshell: The V8 wrapper is just the default engine implementation. You can also use IronJS which is pure managed code. IronJS is F# however so not sure if WP7 discriminates about IL generated by F# compiler.

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