JavaScript equivalent of jQuery's extend method

Question

Background

I have a function that takes a config object as an argument. Within the function, I also have default object. Each of those

Answer 1

The approach of Ivan Kuckir's can also be adapted to create a new object prototype:

Object.prototype.extend = function(b){
for(var key in b)
    if(b.hasOwnProperty(key))
        this[key] = b[key];
    return this;
}

var settings = default.extend(config);