An example of using self and bind()

MyClass.js

function MyClass(otherInstance) {
    var self = this;

    self.options = {
        loaded: false
    };

    setTimeout(function () {
        self.options.loaded = true;

        otherInstance.myClassReady.bind(otherInstance, self);
    }, 1000);
}

MyClass.prototype = {
    getReady: function (thingsToDo) {
        var self = this;

        thingsToDo.forEach(function (thing) {
            self.do(thing);
        });
    },

    do: function (thing) {
        thing.done = true;
    }
}