Store objects in arrays and call their methods in Javascript

Question

I would like to have a Javascript object obj that contains an array of other objects and is able to call their methods. I would also want any object to be able to register into the array by calling a special function of the object obj and pass a reference of itself as an argument.

Would anybody be so kind and help me with that, please? I've been having a hard time with it.

Also I thought of a simple solution where the object obj creates all the other objects but that doesn't seem to work as well...

Can you add some code to show what have you tried so far? What about it isn't working? — Eric Levine, Sep 30 '13 at 19:00

score 1 · Answer 1 · answered Sep 30 '13 at 19:02

Perhaps you mean something like this

function Invoker(arr) {
    arr = arr.slice();
    arr.invoke = function (methodName) {
        var args = Array.prototype.slice.call(arguments, 1),
            i;
        for (i = 0; i < this.length; ++i)
            if (methodName in this[i])
                this[i][methodName].apply(this[i], args);
    };
    return arr;
}

var arr = [
    {foo: function (a, b) {console.log('foo', a);}},
    {foo: function (a, b) {console.log('bar', b);}}
];
var invkr = Invoker(arr);
invkr.invoke('foo', 'hello', 'world');
/*
  foo hello
  bar world
*/

Store objects in arrays and call their methods in Javascript

1 Answers1