false
.
Returns the removed elements.for...of
loop over Array.prototype.entries()
until the returned value from the function is falsy.Array.prototype.slice()
.fn
, accepts a single argument which is the value of the element.const takeWhile = (arr, fn) => { for (const [i, val] of arr.entries()) if (!fn(val)) return arr.slice(0, i); return arr; };
takeWhile([1, 2, 3, 4], n => n < 3); // [1, 2]
Subscribe to get resources directly to your inbox. You won't receive any spam! ✌️