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Fix the upper bound of an example of range and improve wording #36315

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Oct 12, 2024
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Fix the upper bound of an example of range and improve wording #36315

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8 changes: 4 additions & 4 deletions files/en-us/web/javascript/reference/global_objects/array/from/index.md
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Expand Up @@ -132,22 +132,22 @@ Array.from({ length: 5 }, (v, i) => i);
### Sequence generator (range)

```js
// Sequence generator function (commonly referred to as "range", e.g. Python, Clojure, etc.)
// Sequence generator function (commonly referred to as "range", cf. Python, Clojure, etc.)
const range = (start, stop, step) =>
Array.from(
{ length: Math.ceil((stop - start) / step) },
(_, i) => start + i * step,
);

// Generate numbers from 0 (inclusive) to 4 (exclusive) with step 1
// Generate a sequence of numbers from 0 (inclusive) to 5 (exclusive), incrementing by 1
range(0, 5, 1);
// [0, 1, 2, 3, 4]

// Generate numbers from 1 (inclusive) to 10 (exclusive) with step 2
// Generate a sequence of numbers from 1 (inclusive) to 10 (exclusive), incrementing by 2
range(1, 10, 2);
// [1, 3, 5, 7, 9]

// Generate the alphabet making use of it being ordered as a sequence
// Generate the Latin alphabet making use of it being ordered as a sequence
range("A".charCodeAt(0), "Z".charCodeAt(0) + 1, 1).map((x) =>
String.fromCharCode(x),
);
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