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

You can loop through Object's properties using for statement.

var settings = extend(default, config);

function extend(a, b){
    var c = {};
    for(var p in a)
        c[p] = (b[p] == null) ? a[p] : b[p];
    return c;
}