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
falseif you are certain that
objcontains no circular references. This will give better performance if needed. There is no error if
nullis 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
trueif 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
- Fix build badge in README
- Add support for cloning Maps and Sets on Internet Explorer
- Add support for cloning Errors
- Exclude non-enumerable symbol-named object properties from cloning
- Add option to include non-enumerable own properties of objects
- Add support for cloning ES6 Maps, Sets, Promises, and Symbols
- Fix call on getRegExpFlags
- Refactor utilities
- Refactor test suite
- Fix nodeunit version
- Directly call getRegExpFlags
- Improve browser support
- Improve browser testability
- Move helper methods to private namespace
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
Bugs and Issues
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.