60 lines
3.4 KiB
Markdown
60 lines
3.4 KiB
Markdown
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---
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title: Mutate an Array Declared with const
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---
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 Remember to use <a>**`Read-Search-Ask`**</a> if you get stuck. Try to pair program  and write your own code 
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### Problem Explanation:
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Reassign the values of the `const` variable `s` using various element assignment.
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##  Hint: 1
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* You can change array values on `const` like you can with `var` or `let`.
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> _try to solve the problem now_
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##  Hint: 1
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* To access array value use array[index]
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> _try to solve the problem now_
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## Spoiler Alert!
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**Solution ahead!**
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##  Basic Code Solution:
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```javascript
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const s = [5, 7, 2];
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function editInPlace() {
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"use strict";
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s[0] = 2;
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s[1] = 5;
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s[2] = 7;
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}
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editInPlace();
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```
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 <a href='https://codepen.io/dylantyates/pen/djoVjW' target='_blank' rel='nofollow'>Run Code</a>
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# Code Explanation:
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Trying to reassign a read-only `const` variable will throw an error, but by using various element assignment you can access and change the value of an array just like you would with `let` or `var`.
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#### Relevant Links
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* <a href='https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/const' target='_blank' rel='nofollow'>const</a>
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* <a href='https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array' target='_blank' rel='nofollow'>Array</a>
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##  NOTES FOR CONTRIBUTIONS:
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*  **DO NOT** add solutions that are similar to any existing solutions. If you think it is **_similar but better_**, then try to merge (or replace) the existing similar solution.
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* Add an explanation of your solution.
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* Categorize the solution in one of the following categories — **Basic**, **Intermediate** and **Advanced**. 
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* Please add your username only if you have added any **relevant main contents**. ( **_DO NOT_** _remove any existing usernames_)
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> See  <a href='http://forum.freecodecamp.com/t/algorithm-article-template/14272' target='_blank' rel='nofollow'>**`Wiki Challenge Solution Template`**</a> for reference.
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