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---
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title: Deepcopy
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id: 596a8888ab7c01048de257d5
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challengeType: 5
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forumTopicId: 302247
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---
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## Description
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<section id='description'>
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Write a function that returns a deep copy of a given object. The copy must not be the same object that was given.
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This task will not test for:
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<ul>
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<li>Objects with properties that are functions</li>
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<li>Date objects or object with properties that are Date objects</li>
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<li>RegEx or object with properties that are RegEx objects</li>
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<li>Prototype copying</li>
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</ul>
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</section>
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## Instructions
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<section id='instructions'>
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</section>
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## Tests
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<section id='tests'>
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```yml
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tests:
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- text: <code>deepcopy</code> should be a function.
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testString: assert(typeof deepcopy === 'function');
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- text: '<code>deepcopy({test: "test"})</code> should return an object.'
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testString: 'assert(typeof deepcopy(obj1) === ''object'');'
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- text: <code>deepcopy</code> should not return the same object that was provided.
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testString: assert(deepcopy(obj2) != obj2);
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- text: When passed an object containing an array, <code>deepcopy</code> should return a deep copy of the object.
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testString: assert.deepEqual(deepcopy(obj2), obj2);
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- text: When passed an object containing another object, <code>deepcopy</code> should return a deep copy of the object.
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testString: assert.deepEqual(deepcopy(obj3), obj3);
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```
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</section>
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## Challenge Seed
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<section id='challengeSeed'>
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<div id='js-seed'>
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```js
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function deepcopy(obj) {
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return true;
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}
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```
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</div>
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### After Test
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<div id='js-teardown'>
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```js
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const obj1 = { test: 'test' };
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const obj2 = {
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t: 'test',
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a: ['an', 'array']
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};
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const obj3 = {
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t: 'try',
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o: obj2
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};
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```
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</div>
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</section>
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## Solution
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<section id='solution'>
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```js
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function deepcopy(obj) {
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return JSON.parse(JSON.stringify(obj));
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}
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```
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</section>
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