ChakraCore UDF - executing JavaScript in AutoIt

[scintilla4evr]

Hello!

Microsoft Edge, the new browser released with Windows 10, uses Chakra as its JavaScript engine. In January, Microsoft released ChakraCore - the open source version of the engine that can be used in other apps.

So, how about using it in AutoIt? I tried 2 times to create ChakraCore UDF, and I succeeded.

So here it is - the ChakraCore UDF.

Features:

• Executing JavaScript from AutoIt (obviously)
• Passing data from AutoIt to JavaScript
• Calling AutoIt functions from JavaScript

ChakraCore UDF

Have fun!

Edited October 1, 2016 by scintilla4evr

[Gianni]

looks interesting,

p.s.
(seems the answer to what I was wondering here.... )

thanks for sharing

[Gianni]

Is there any way of instantiating the "chakra.dll" in the form of an object?
something similar to as described here (but for C#), where this command 'host = new ChakraHost();" is used to instantiate Chakra as an object, and then the dot notation syntax is used to call the methods 'host.CallFunction("commitFunction");'  ......?

Edited October 5, 2016 by Chimp

[scintilla4evr]

3 hours ago, Chimp said:

 

Is there any way of instantiating the "chakra.dll" in the form of an object?

 

I think that would require wrapping the functions in some kind of COM object (AutoItObject for example), since ChakraCore.dll exposes only "flat API", i.e. exported DLL functions. ("Note that JSRT APIs are C++ APIs, this sample assumes a C# wrapper.", as it says on the Embedding ChakraCore page).

Edited October 5, 2016 by scintilla4evr

[Gianni]

Hi @scintilla4evr, thanks for your answer

I was wondering if what says @guinness  in his topic here, could be used with this chakradll as well..?

anyway, back on your udf, could you show how to use it if, for example, I would like to use the functions from this 'moment' javascript library directly from AutoIt? (library found on this nice site)

any example is welcome

Thank You

[PifPaf]

Help a poor newbie !

Congratulations, but

I can't find out what's wrong with chakracore.au3  when calling a quite basic execution on the example 1 mode :

(function() {
    var h = window.document.location.href ;
    return h ;
})();

Many thanks in advance.

 

test.au3

test.js

[junkew]

I assume from first example the answer should be 25. I get 1 as an answer.

JavaScript Output: 1

W10, 64 bits I am running on

 

[junkew]

Func _ChakraCore_Startup($sDllFile = "Chakra.dll")

I had to remove the core part from the dll name and then it works. Powefull extension

My output from the examples

1. JavaScript Output: 5
2. JavaScript Output: 13
3. JavaScript Output: llo Wor
4. JavaScript Output: Lorem ipsum dolor sit amet
5. a: 320
   b: !dlroW olleH

 

 

 

[scintilla4evr]

On 11/20/2016 at 4:04 PM, PifPaf said:

Help a poor newbie !

Congratulations, but

I can't find out what's wrong with chakracore.au3  when calling a quite basic execution on the example 1 mode :

(function() {
    var h = window.document.location.href ;
    return h ;
})();

Many thanks in advance.

 

test.au3

test.js

Sorry for such a GIGANTIC delay in answering this question.

You can't use window.document.<blah blah insert some object here> in ChakraCore, because the window object is exposed only by web browsers. This UDF only gives access to "raw" JavaScript, so there are no browser-specific objects - no window, navigator, DOM, etc.

[dariel]

Hi, i don't manage to make work any example, always return 1, any help?

Fixed, i was using 64bits OS so i add

#AutoIt3Wrapper_UseX64=n

 

Edited March 1, 2019 by dariel
Found the solution.

[HamidZaeri]

I have a code like this.

(function(helloWorldString1) {
    return helloWorldString1.substr(2, 7);
})();
(function(helloWorldString2) {
    return helloWorldString2.substr(3, 7);
})();
(function(helloWorldString3) {
    return helloWorldString3.substr(4, 7);
})();

How can I get the string result for the last function?

 

Or how can i get multiple result from a js code?

 

Edited December 29, 2019 by HamidZaeri

[malcev]

Just found a bug.

Before calling JsDisposeRuntime We need to set set current context to not existent one with JsSetCurrentContext function.