Array.prototype.some

Array.prototype.some is a method in JavaScript that can be used to find out if at least one item in a given array passes the criteria given in the callback provided to it.

It accepts a callback as an argument where the array item, the index and array will be passed into the callback as arguments.

The callback will need to return true or false. If the callback returns true then the element has been found and the iterations will stop, otherwise the method will continue iterating over the array until the element is found or the array is fully iterated over.

The result of the function will be a boolean true or false depending on if at least one element has been found that passes the condition within the provided callback.

For example:

[1, 2, 3].some(item => item > 3); // false [1, 2, 3].some(item => item > 2); // true