30-seconds-of-code/snippets/js/s/drop-array-elements-from-left-while.md

title, type, language, tags, cover, dateModified

title	type	language	tags	cover	dateModified
Drop array elements from the left based on function	snippet	javascript	array	metropolitan-window	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]