Uncaught TypeError not a function - javascript class with prototyping

Question

I am getting not a function error from javascript.

This is part of my object that I define:

Product.Config.prototype.configureSubscribe = function(funct)
{
    this.configureObservers.push(funct);
};

After that I create another object:

  Product.ConfigurableSwatches = Class.create();
    Product.ConfigurableSwatches.prototype = {
    initialize: function(productConfig, config) {
            // redefine some default options if configured
            if (config && typeof(config) == 'object') {
                this.setConfig(config);
            }
            this.productConfig = productConfig;
            // Store configurable attribute data
            var attributes = [];
            for (var i in productConfig.config.attributes) {
                attributes.push(productConfig.config.attributes[i]);
            }
            this.configurableAttributes = attributes;
            // Run it
            this.run();
            return this;
        },
    run: function() {
        // HERE IT BREAKS
        this.productConfig.configureSubscribe(this.onSelectChange.bind(this));
    }
}

I am getting following error:

Uncaught TypeError: this.productConfig.configureSubscribe is not a function

Can someone advice what is the problem?

Only if the OP were not following regular case conventions in JavaScript. Everywhere else, the OP seems to follow it though. @bla009 where is the code that is calling Product.ConfigurableSwatches.init? — Ruan Mendes
– Ruan Mendes, Commented Jan 14, 2016 at 12:58
@CodeiSir that initializer is missing. I added it before Product.ConfigurableSwatches. Can you add your answer so I can mark it as correct answer. — Bob
– Bob, Commented Jan 14, 2016 at 13:22

CoderPi · Accepted Answer · 2016-01-14 14:46:00Z

1

The line this.productConfig = productConfig should be

this.productConfig = new productConfig()

to create a new Object with its prototypes

answered Jan 14, 2016 at 14:46

CoderPi

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