npm install clone
(It also works with browserify, ender or standalone. You may want to use the
noParse in browserify to reduce the resulting file size, since usually
Buffers are not needed in browsers.)
var clone = ;var a b;a = foo: bar: 'baz' ; // initial value of ab = ; // clone a -> bafoobar = 'foo'; // change aconsole; // show aconsole; // show b
This will print:
foo: bar: 'foo'foo: bar: 'baz'
clone masters cloning simple objects (even with custom prototype), arrays, Date objects, and RegExp objects. Everything is cloned recursively, so that you can clone dates in arrays in objects, for example.
clone(val, circular, depth)
val -- the value that you want to clone, any type allowed
circular -- boolean
circular set to
false if you are certain that
contains no circular references. This will give better performance if
needed. There is no error if
null is passed as
depth -- depth to which the object is to be cloned (optional,
defaults to infinity)
prototype -- sets the prototype to be used when cloning an object.
(optional, defaults to parent prototype).
includeNonEnumerable -- set to
true if the non-enumerable properties
should be cloned as well. Non-enumerable properties on the prototype chain
will be ignored. (optional, defaults to
obj-- the object that you want to clone
Does a prototype clone as described by Oran Looney.
var a b;a = hello: 'world' ;amyself = a;b = ;console;
This will print:
hello: "world" myself: Circular
b.myself points to
Some special objects like a socket or
stderr are known to not
be cloneable. If you find other objects that cannot be cloned, please open an
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