search() : The search() method searches the collection for the given value and returns its key if found. If the item is not found, false is returned.
const collection = collect([2, 4, 6, 8]);
collection.search(4);
// 1
The search is done using a "loose" comparison, meaning a string with an integer value will be considered equal to an integer of the same value. To use strict comparison, pass true as the second argument to the method :
collection.search('4', true);
// false
Alternatively, you may pass in your own callback to search for the first item that passes your truth test:
collection.search((item, key) => item > 5);
// 2
