This method is like _.indexOf except that it performs a binary search on a sorted array.
_.indexOf
array
The array to search.
The value to search for.
Returns the index of the matched value, else -1.
-1
_.sortedIndexOf([1, 1, 2, 2], 2);// => 2 Copy
_.sortedIndexOf([1, 1, 2, 2], 2);// => 2
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This method is like
_.indexOfexcept that it performs a binary search on a sortedarray.