4.17.11
3.10.1
2.4.2
1.3.1

_.findLastIndex(array, [predicate=_.identity], [fromIndex=array.length-1])

sourcenpm package

This method is like _.findIndex except that it iterates over elements of collection from right to left.

Since

2.0.0

Arguments

argument
array
[predicate=_.identity]
[fromIndex=array.length-1]
type
Array
Function
number
description
The array to inspect.
The function invoked per iteration.
The index to search from.

Returns

(array)

Example

var users = [
  { user: "barney", active: true },
  { user: "fred", active: false },
  { user: "pebbles", active: false },
];

_.findLastIndex(users, function (o) {
  return o.user == "pebbles";
});
// => 2

// The `_.matches` iteratee shorthand.
_.findLastIndex(users, {
  user: "barney",
  active: true,
});
// => 0

// The `_.matchesProperty` iteratee shorthand.
_.findLastIndex(users, [
  "active",
  false,
]);
// => 2

// The `_.property` iteratee shorthand.
_.findLastIndex(users, "active");
// => 0

var users = [
  { user: "barney", active: true },
  { user: "fred", active: false },
  { user: "pebbles", active: false },
];

_.findLastIndex(users, function (o) {
  return o.user == "pebbles";
});
// => 2

// The `_.matches` iteratee shorthand.
_.findLastIndex(users, { user: "barney", active: true });
// => 0

// The `_.matchesProperty` iteratee shorthand.
_.findLastIndex(users, ["active", false]);
// => 2

// The `_.property` iteratee shorthand.
_.findLastIndex(users, "active");
// => 0