我正在为Internet Explorer开发BHO。在BHO代码中，当我枚举JavaScript对象的属性时，我需要检测属性值是否是JavaScript函数。
我枚举对象属性，并将每个属性值作为Server listening on localhost:4000
**click on detailsBtn**
GET /get/details?srv=myserver.google.com&script=%2Fusr%2Fbin%2Ftail 304 16.003 ms - -
connect YyYHFI9CARpBHaxoAAAB
**click on closeBtn**
DISconnected YyYHFI9CARpBHaxoAAAB
**click on detailsBtn**
GET /get/details?srv=myserver.google.com&script=%2Fusr%2Fbin%2Ftail 304 6.308 ms - -
connect vzfBnUPHUqYXd5qaAAAC
connect vzfBnUPHUqYXd5qaAAAC
**click on closeBtn**
DISconnected vzfBnUPHUqYXd5qaAAAC
DISconnected vzfBnUPHUqYXd5qaAAAC
**click on detailsBtn**
GET /get/details?srv=myserver.google.com&script=%2Fusr%2Fbin%2Ftail 304 4.677 ms - -
connect 3quEe5G1gFDJ2BvrAAAD
connect 3quEe5G1gFDJ2BvrAAAD
connect 3quEe5G1gFDJ2BvrAAAD
**click on closeBtn**
DISconnected 3quEe5G1gFDJ2BvrAAAD
DISconnected 3quEe5G1gFDJ2BvrAAAD
DISconnected 3quEe5G1gFDJ2BvrAAAD
获取，如下所示：
VARIANT对象和函数都是CComQIPtr<IDispatchEx> pObj = /* ... get a reference to JavaScript object */
DISPID dispId = DISPID_STARTENUM;
for (; pObj && NOERROR == pObj->GetNextDispID(fdexEnumDefault, dispId, &dispId);)
{
DISPPARAMS dispParams = { 0 };
CComVariant value; // here I get property value
// invoke property getter
pObj->Invoke(dispId, IID_NULL, LOCALE_USER_DEFAULT, DISPATCH_PROPERTYGET, &dispParams, &value, NULL, NULL);
// determine value kind
switch (value.vt)
{
case VT_DISPATCH:
// both Object and Function get here...
}
}
等于VARTYPE vt。我正在寻找区分两者的方法。
在JavaScript中，我可以这样做：
VT_DISPATCH或
typeof obj === "function"
（虽然在IE中，Object.getPrototypeOf(obj).constructor.name === "function"
是constructor.name）。