This method is like _.sortedIndex except that it returns the highest index at which value should be inserted into array in order to maintain its sort order.
_.sortedIndex
value
array
The sorted array to inspect.
The value to evaluate.
Returns the index at which value should be inserted into array.
_.sortedLastIndex([4, 5], 4);// => 1 Copy
_.sortedLastIndex([4, 5], 4);// => 1
This method is like
_.sortedIndexexcept that it returns the highest index at whichvalueshould be inserted intoarrayin order to maintain its sort order.