30-seconds-of-code/snippets/zipObject.md

title, tags

title	tags
zipObject	array,object,intermediate

Associates properties to values, given array of valid property identifiers and an array of values.

• Use Array.prototype.reduce() to build an object from the two arrays.
• If the length of props is longer than values, remaining keys will be undefined.
• If the length of values is longer than props, remaining values will be ignored.

const zipObject = (props, values) =>
  props.reduce((obj, prop, index) => ((obj[prop] = values[index]), obj), {});

zipObject(['a', 'b', 'c'], [1, 2]); // {a: 1, b: 2, c: undefined}
zipObject(['a', 'b'], [1, 2, 3]); // {a: 1, b: 2}