30-seconds-of-code/snippets/dropWhile.md

title, tags, expertise, cover, firstSeen, lastUpdated

title	tags	expertise	cover	firstSeen	lastUpdated
Drop list elements from the left based on function	array	intermediate	blog_images/colorful-lounge.jpg	2018-01-26T12:23:18+02:00	2020-10-19T18:51:03+03:00

Removes elements in an array until the passed function returns true. Returns the remaining elements in the array.

• Loop through the array, using Array.prototype.slice() to drop the first element of the array until the value returned from func is true.
• Return the remaining elements.

const dropWhile = (arr, func) => {
  while (arr.length > 0 && !func(arr[0])) arr = arr.slice(1);
  return arr;
};

dropWhile([1, 2, 3, 4], n => n >= 3); // [3, 4]