Function (callable) objects with inherited properties
Is there any way to create a function/callable object that inherits properties from another object? This is possible with __proto__
but that property is deprecated/non-standard. Is there a standards compliant way to do this?
/* A constructor for the object that will host the inheritable properties */
var CallablePrototype = function () {};
CallablePrototype.prototype = Function.prototype开发者_高级运维;
var callablePrototype = new CallablePrototype;
callablePrototype.hello = function () {
console.log("hello world");
};
/* Our callable "object" */
var callableObject = function () {
console.log("object called");
};
callableObject.__proto__ = callablePrototype;
callableObject(); // "object called"
callableObject.hello(); // "hello world"
callableObject.hasOwnProperty("hello") // false
This doesn't seem to be possible in a standard way.
Are you sure you can't just use plain copying instead?
function hello(){
console.log("Hello, I am ", this.x);
}
id = 0;
function make_f(){
function f(){
console.log("Object called");
}
f.x = id++;
f.hello = hello;
return f;
}
f = make_f(17);
f();
f.hello();
g = make_f(17);
g();
g.hello();
(If I had to do this I would also hide id
, hello
and similar stuff inside a closure instead of using globals)
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