Array tail

OSCC · JavaScript, Array · Oct 22, 2020

Returns all elements in an array except for the first one.

  • Use Array.prototype.slice()to return the array without the first element if Array.prototype.length is more than 1.
  • Otherwise, return the whole array.
const tail = arr => (arr.length > 1 ? arr.slice(1) : arr);
tail([1, 2, 3]); // [2, 3]
tail([1]); // [1]

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