Checks if an array has more than one value matching the given function.
- Use
Array.prototype.filter()
in combination withfn
to find all matching array elements. - Use
Array.prototype.length
to check if more than one element matchfn
.
代码实现
const hasMany = (arr, fn) => arr.filter(fn).length > 1;
hasMany([1, 3], x => x % 2); // true
hasMany([1, 2], x => x % 2); // false
翻译自:https://www.30secondsofcode.org/js/s/array-has-many-matches