clone
Object.clone(obj) -> Object
Clones the passed object using shallow copy (copies all the original’s properties to the result).
Do note that this is shallow copy, not deep copy.
Examples
var o = { name: 'Prototype', version: 1.5, authors: ['sam', 'contributors'] };
var o2 = Object.clone(o);
o2.version = '1.5 weird';
o2.authors.pop();
o.version
// -> 1.5
o2.version
// -> '1.5 weird'
o.authors
// -> ['sam'] // Ouch! Shallow copy!