8ee50178f3
Correct: `Array.from()` (it’s a static method) Incorrect: `Array.join()` (doesn’t exist; it’s a prototype method) This patch uses the common `#` syntax to denote `.prototype.`.
17 lines
524 B
Markdown
17 lines
524 B
Markdown
### offset
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Moves the specified amount of elements to the end of the array.
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Use `Array.prototype.slice()` twice to get the elements after the specified index and the elements before that.
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Use the spread operator(`...`) to combine the two into one array.
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If `offset` is negative, the elements will be moved from end to start.
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```js
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const offset = (arr, offset) => [...arr.slice(offset), ...arr.slice(0, offset)];
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```
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```js
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offset([1, 2, 3, 4, 5], 2); // [3, 4, 5, 1, 2]
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offset([1, 2, 3, 4, 5], -2); // [4, 5, 1, 2, 3]
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```
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