20 lines
491 B
Markdown
20 lines
491 B
Markdown
---
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title: digitize
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tags: math,array,beginner
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---
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Converts a number to an array of digits, removing its sign if necessary.
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- Use `Math.abs()` to strip the number's sign.
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- Convert the number to a string, using the spread operator (`...`) to build an array.
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- Use `Array.prototype.map()` and `parseInt()` to transform each value to an integer.
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```js
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const digitize = n => [...`${Math.abs(n)}`].map(i => parseInt(i));
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```
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```js
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digitize(123); // [1, 2, 3]
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digitize(-123); // [1, 2, 3]
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```
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