Hi,
ext Allison Newman wrote:
Hi,
I have a framework written in C using a hand-rolled class system, and I am
trying to create Javascript bindings to use this framework.
So far I have succesfully created objects containing all of the desired methods
and properties (with their appropriate getters and setters), correctly handle
callbacks etc etc. BUT, I have hit a problem - I cannot seem to create the
prototype for these host objects that I have created.
Specifically, in Javascript, if I write:
var host_object = new MyHostObject();
host_object.prototype resolves as [undefined].
I have tried setting the prototype of objects created in the various
callAsConstructor callbacks that I have implemented, by calling
JSObjectSetPrototype, but this doesn't seem to have any effect, and I have also
tried setting the class attributes in the class reference to
kJSClassAttributeNoAutomaticPrototype also to no avail. Maybe I am not making
the call in the right place? Or is there another step that I am missing?
Does anybody have a working example of doing this correctly? Or even a
suggestion for what I am doing wrong?
Thanks in advance,
Alli
(This question belongs on the webkit-help list.)
Looks like you're confusing the property named "prototype" with the
internal [[Prototype]] ("__proto__") property.
"host_object.__proto__" should resolve to your prototype object (and
moreover, "host_object.foo" should resolve to property "foo" in your
prototype). "MyHostObject.prototype" should also resolve to your
prototype object if you want your constructor to seem like a "normal" JS
constructor (see section 13.2.2 of the ES5 spec).
Regards,
Kent
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