Pluck values from array of objects

OSCC · JavaScript, Array, Object · Oct 22, 2020

Converts an array of objects into an array of values corresponding to the specified key.

  • Use Array.prototype.map() to map the array of objects to the value of key for each one.
const pluck = (arr, key) => arr.map(i => i[key]);
const simpsons = [
  { name: 'lisa', age: 8 },
  { name: 'homer', age: 36 },
  { name: 'marge', age: 34 },
  { name: 'bart', age: 10 }
];
pluck(simpsons, 'age'); // [8, 36, 34, 10]

Recommended snippets

  • JSON to CSV

    JavaScript, Array

    Converts an array of objects to a comma-separated values (CSV) string that contains only the columns specified.

  • Filters an array of objects based on a condition while also filtering out unspecified keys.

  • Creates an object from an array, using the specified key and excluding it from each value.