Same question: http://stackoverflow.com/questions/43909594/
On Fri, May 12, 2017 at 7:40 PM, Ben Noordhuis <i...@bnoordhuis.nl> wrote:
> On Thu, May 11, 2017 at 11:02 AM, XadillaX Scarlet
> <xadillax.f...@gmail.com> wrote:
> > I know creating an ObjectTemplate and we can do several things to it.
> But my
> > question is not about those well-known things.
> >
> > I want to know how to pass the second parameter.
> >
> > As the official guide said:
> >
> > Each function template has an associated object template. This is used to
> > configure objects created with this function as their constructor.
> >
> > And the second parameter of ObjectTemplate::New is a constructor typed by
> > FunctionTemplate.
> >
> > static Local<ObjectTemplate> New(Isolate *isolate,
> Local<FunctionTemplate>
> > constructor = Local<FunctionTemplate>());
> >
> > That means something like this:
> >
> > void Constructor(const FunctionCallbackInfo<Value>& args)
> > {
> > // ...
> > }
> >
> > Local<FunctionTemplate> _constructor = FunctionTemplate::New(isolate,
> > Constructor);
> > Local<ObjectTemplate> tpl = ObjectTemplate::New(isolate, _constructor);
> >
> > Who can give me a demo that how to implement the Constructor function.
> >
> > I tried this, but failed:
> >
> > void Constructor(const FunctionCallbackInfo<Value>& args)
> > {
> > Isolate* isolate = args.GetIsolate();
> > args.This()->Set(String::NewFromUtf8(isolate, "value"),
> > Number::New(isolate, 233));
> > args.GetReturnValue().Set(args.This());
> > }
> >
> > By the way, I know the use case of accessors and so on, I just want to
> know
> > how to use the second parameter.
>
> When you say 'failed', what exactly do you mean? Is the function not
> called or don't you see the .value property on the new object?
>
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