Hi Chad, Thanks for your answer.
Say I want to convert a JS value to my C++ variant type, so if string, cast string if number cast float, if array iterate etc (I'm trying to store a JS object as c++ map) Cheers Lee On Thursday, May 15, 2014 7:04:33 AM UTC+1, Chad Austin wrote: > > On Tue, May 13, 2014 at 3:37 AM, Lee Morgan > <[email protected]<javascript:> > > wrote: > >> Hi, >> >> Can I access the object keys given an emscripten::val. >> > > Hi Lee, > > That's a good question. Here's one way: > > #include <stdio.h> > #include <emscripten/val.h> > > using emscripten::val; > > int main() { > val window = val::global("window"); > val keys = val::global("Object").call<val>("keys", window); > int length = keys["length"].as<int>(); > for (int i = 0; i < length; ++i) { > printf("%s\n", keys[i].as<std::string>().c_str()); > } > } > > The example program looks up the global 'window' object and then prints > out all of the keys. > > >> How do I get type information about a val? or an array length etc >> > > The above example illustrates getting array length, but I don't think > there's a typeof operator exposed yet. > > In particular, what kind of type information do you need? > > Thanks, > Chad > > -- You received this message because you are subscribed to the Google Groups "emscripten-discuss" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
