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findLastIndex

_.findLastIndex(predicate, array) # Ⓢ [Ⓣ][1] Ⓝ

This method is like _.findIndex except that it iterates over elements



of collection from right to left.

Since​

2.0.0

Arguments​

  1. predicate (Function): The function invoked per iteration.
  2. array (Array): The array to inspect.

Returns​

(number): Returns the index of the found element, else -1.

Example​

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

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

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

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

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