83 lines
2.0 KiB
Markdown
83 lines
2.0 KiB
Markdown
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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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---
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## Description
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<section id='description'>
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Task:
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<p>Write a function that returns a deep copy of a given object.</p>
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<p>The copy must not be the same object that was given.</p>
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<p>This task will not test for: </p>
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Objects with properties that are functions
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Date objects or object with properties that are Date objects
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RegEx or object with properties that are RegEx objects
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Prototype copying
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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'', ''<code>deepcopy</code> should be a 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'', ''<code>deepcopy({test: "test"})</code> should return an object.'');'
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- text: Should not return the same object that was provided.
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testString: 'assert(deepcopy(obj2) != obj2, ''Should not return the same object that was provided.'');'
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- text: 'When passed an object containing an array, should return a deep copy of the object.'
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testString: 'assert.deepEqual(deepcopy(obj2), obj2, ''When passed an object containing an array, should return a deep copy of the object.'');'
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- text: 'When passed an object containing another object, should return a deep copy of the object.'
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testString: 'assert.deepEqual(deepcopy(obj3), obj3, ''When passed an object containing another object, should return a deep copy of the object.'');'
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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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// Good luck!
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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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console.info('after the test');
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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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