v8学习---js整数转c++ int

#include <v8.h>using namespace v8; int main(){    Isolate* isolate = Isolate::GetCurrent();    HandleScope handleScope(isolate);    Handle<Context> context = Context::New(isolate);    Context::Scope context_scope(context);    Handle<Script> script = Script::Compile(String::New("123"));    Handle<Value> value = script->Run();     int num = value->Int32Value();    printf("%d\n", num);    return 0;}

留意其中的

int num = value->Int32Value();