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remove javascript Code Snippet in 2024

arrayintermediate

Last Updated: 20 April 2024

Mutates an array by removing elements for which the given function returns false.

  • Use Array.prototype.filter() to find array elements that return truthy values.
  • Use Array.prototype.reduce() to remove elements using Array.prototype.splice().
  • The callback function is invoked with three arguments (value, index, array).
const remove = (arr, func) => Array.isArray(arr) ? arr.filter(func).reduce((acc, val) => { arr.splice(arr.indexOf(val), 1); return acc.concat(val); }, []) : [];
remove([1, 2, 3, 4], n => n % 2 === 0); // [2, 4]

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