freeCodeCamp/guide/english/certifications/javascript-algorithms-and-data-structures/functional-programming/use-the-some-method-to-check-that-any-elements-in-an-array-meet-a-criteria/index.md

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Use the some Method to Check that Any Elements in an Array Meet a Criteria

Use the some Method to Check that Any Elements in an Array Meet a Criteria

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Problem Explanation

Use the some method inside the checkPositive function to check if any element in arr is positive. The checkPositive function should return a Boolean value.

Relevant Links

• Array.prototype.some()

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Solutions

Solution 1 (Click to Show/Hide)

function checkPositive(arr) {
  return arr.some(elem => elem > 0);
}
checkPositive([1, 2, 3, -4, 5]);