tips for transferring a variable to a class function

I'm working on a JavaScript object that looks like this:

var myObject = {
    initialize: function() {
        this.property1 = 'value 1',
        this.property2 = 'value 2'
    },

    outer: {
        inner: {
            inner_property1: 'inner value 1',
            inner_property2: 'inner value 2',
            inner_property3: 'inner value 3',
            inner_method: function(item1, item2) {
                console.log(this.property1);
            }
        }
    }
}

var instance = Object.create(myObject);
instance.initialize();
document.instance = instance;

I want to pass a variable set in the initialize method to the outer.inner.inner_method without adding more parameters to the method. However, the inner_method can only take two parameters as it is defined by a third party plugin. How can I access this.property1 from within the inner method?

Any suggestions would be greatly appreciated.

Answer №1

When dealing with objects, they do not have a direct reference to their containing objects. This means that within the inner object, there is no automatic way to access outer or config. To overcome this, you must pass the object explicitly.

For example, define the function as follows:

inner_function: function(config, item_1, item_2) {
    console.log(config.var1);
}

And then call it like this:

document.config.outer.inner.inner_function(document.config, i1, i2);

If you wish to access the containers without passing them as arguments, you have to explicitly include them in the object like this:

var configs = {
    init: function() {
        this.var1 = 'variable 1',
        this.var2 = 'variable 2'
    },

    outer: {
        inner: {
            inner_var1: 'inner variable 1',
            inner_var2: 'inner variable 2',
            inner_var3: 'inner variable 3',
            inner_function: function(item_1, item2) {
                console.log(this.parent.parent.var1);
            }
        }
    }
}
configs.outer.inner.parent = configs.outer;
configs.outer.parent = configs;

Answer №2

The issue arises due to the incorrect invocation of the inner_function with the appropriate value for this. It is imperative to ensure that this is correctly associated with it. Here is a potential solution:

module.initialize(document.settings.outer.internal.bind(document.settings))

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