Thank you for response. I need dynamic analyze any JavaScript. If I put JS
file, I need log (all function and object) what is created, called, changed
etc. And this I need without change JS file. It can be slow. Is any central
point where all function, object if is in JS code called, changed are call
(C++ class/method)?
Thank.
Dne pondělí 22. srpna 2016 13:25:28 UTC+2 Jakob Kummerow napsal(a):
>
> This is going to be very, very hard. Your examples are different things
> (global variable declaration is not the same as object property addition),
> and there are many different code paths you'd have to modify.
>
> I'd suggest to take a step back and consider other approaches to whatever
> it is you're trying to accomplish. For example, if you're embedding V8,
> maybe an interceptor on the global object would help. If you want to
> monitor accesses to individual objects, you can wrap them in a Proxy (which
> is super slow; but then again logging all sorts of stuff is going to be
> super slow anyways). If you even know which properties you're interested
> in, using setters would be reasonable. If you want to analyze what a
> particular program is doing, you can use DevTools to step through it line
> by line and/or set breakpoints in interesting locations.
>
> Also, to be pedantic:
>
> var test = "123"; // console > "Object has been created, value is 123"
>>
>
> No object has been created here. "123" is just a number, not an object.
>
>
>> test.foo = "foo" // console > "Object has been edited value is
>> {foo:"foo"} "
>>
>
> Not quite, as you can't set properties on numbers:
> -> var test = 123
> -> test.foo = "foo"
> -> test
> 123
> -> test.foo
> undefined
>
>
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