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.`.
15 lines
314 B
Markdown
15 lines
314 B
Markdown
### allEqual
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Check if all elements in an array are equal.
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Use `Array.prototype.every()` to check if all the elements of the array are the same as the first one.
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```js
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const allEqual = arr => arr.every(val => val === arr[0]);
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```
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```js
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allEqual([1, 2, 3, 4, 5, 6]); // false
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allEqual([1, 1, 1, 1]); // true
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```
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