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Welcome to the Javascript-dictonary-object-and-hasOwnProperty- wiki!

Dictonary Object

The main chracteristics of dictonary object, it seems, are the key and value property. Even though Javascript doesn`t have a dictonary type, it offers an object type which has the same ability:

var dictonaryObject =
{
    anyKeyName: "anyValue", //type "string"
    "anotherKey": 42        //type "number" (Key name can be string if wanted)
}

//Getting access to the objects value
dictonaryObject.anyKeyName;

//Another way for a value access
dictonaryObject["anotherKey"];

Also the object could contain functions and/or arrays as values. An example could look like as follows:

var dictonaryObject =
{
    anyKeyName: function(a)
    {
        return (a + a);
    }
}

//Access
dictonaryObject.anyKeyName(1);//Outputs 2

//Another access
dictonaryObject["anyKeyName"](1); //Outputs 2 

hasOwnProperty

Javascripts hasOwnProperty method allows to verify the existence of an objects property as the following example shows:

var dictonaryObject =
{
    anyKeyName: function(a)
    {
        return (a + a);
    }
}

//Outputs true
dictonaryObject.hasOwnProperty('anyKeyName');

//Outputs false
dictonaryObject.hasOwnProperty('World');

Javascript also allows to overwrite or delete the objects hasOwnProperty method:

STILL IN WORK!