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23 lines
770 B
Markdown
23 lines
770 B
Markdown
## Sign
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### Instructions
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Create a function named `sign` that takes one number argument; returning `1` if the number is positive, `-1` if the number is negative and `0` if the number is exactly 0.
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> You must not just use `Math.sign`, make your own.
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Create a function named `sameSign` that takes 2 numbers as arguments and returns `true` if they both have the same sign, or false otherwise.
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### Notions
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- [Functions](https://nan-academy.github.io/js-training/examples/functions.js)
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- [If-else](https://nan-academy.github.io/js-training/examples/if-else.js)
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- [Math.sign](https://devdocs.io/javascript/global_objects/math/sign)
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### Code provided
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> The provided code will be added to your solution, and does not need to be submitted.
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```js
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Math.sign = undefined
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```
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