find-last-index-x
Search an array from the end and return the matched index.
module.exports(array, callback, [thisArg])
⇒ number
⏏
Like findIndex
, this method returns an index in the array, if an element
in the array satisfies the provided testing function, except it is peformed
in reverse. Otherwise -1 is returned.
Kind: Exported function
Returns: number
- Returns index of positively tested element, otherwise -1.
Throws:
TypeError
If array isnull
orundefined
-TypeError
Ifcallback
is not a function.
Param | Type | Description |
---|---|---|
array | Array |
The array to search. |
callback | function |
Function to execute on each value in the array, taking three arguments: element , index and array . |
[thisArg] | * |
Object to use as this when executing callback . |
Example
; { var start = 2; while start <= Math if element % start++ < 1 return false; return element > 1;} console; // -1, not foundconsole; // 4