all javascript Code Snippet in 2024
arraybeginner
Last Updated: 17 December 2024
Checks if the provided predicate function returns true for all elements in a collection.
- Use
Array.prototype.every()to test if all elements in the collection returntruebased onfn. - Omit the second argument,
fn, to useBooleanas a default.
const all = (arr, fn = Boolean) => arr.every(fn);all([4, 2, 3], x => x > 1); // true all([1, 2, 3]); // true
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