4.17.11
3.10.1
2.4.2
1.3.1

_.map(collection, [iteratee=_.identity])

sourcenpm package

Creates an array of values by running each element in collection thru iteratee. The iteratee is invoked with three arguments:
(value, index|key, collection).

Many lodash methods are guarded to work as iteratees for methods like _.every, _.filter, _.map, _.mapValues, _.reject, and _.some.

The guarded methods are:
ary, chunk, curry, curryRight, drop, dropRight, every, fill, invert, parseInt, random, range, rangeRight, repeat, sampleSize, slice, some, sortBy, split, take, takeRight, template, trim, trimEnd, trimStart, and words

Since

0.1.0

Arguments

argument
collection
[iteratee=_.identity]
type
(Array|Object)
Function
description
The collection to iterate over.
The function invoked per iteration.

Returns

(array)

Example

function square(n) {
  return n * n;
}

_.map([4, 8], square);
// => [16, 64]

_.map({ a: 4, b: 8 }, square);
// => [16, 64] (iteration order is not guaranteed)

var users = [
  { user: "barney" },
  { user: "fred" },
];

// The `_.property` iteratee shorthand.
_.map(users, "user");
// => ['barney', 'fred']

function square(n) {
  return n * n;
}

_.map([4, 8], square);
// => [16, 64]

_.map({ a: 4, b: 8 }, square);
// => [16, 64] (iteration order is not guaranteed)

var users = [{ user: "barney" }, { user: "fred" }];

// The `_.property` iteratee shorthand.
_.map(users, "user");
// => ['barney', 'fred']