calculate-from-index-right-x

calculate-from-index-right-x

Calculates a fromIndexRight of a given value for an array.

module.exports(array, fromIndex) ⇒ number ⏏

This method calculates a fromIndexRight of a given value for an array.

Kind: Exported function
Returns: number - The calculated fromIndex. Default is 0.
Throws:

• TypeError If array is null or undefined.

Param	Type	Description
array	Array	The array on which to calculate the starting index.
fromIndex	number	The position in this array at which to begin. A negative value gives the index of array.length + fromIndex by asc.

Example

import calcFromIndexRight from 'calculate-from-index-right-x';
 
calcFromIndexRight([1, 2, 3], 1); // 1
calcFromIndexRight([1, 2, 3], Infinity); // 2
calcFromIndexRight([1, 2, 3], -Infinity); // -Infinity
calcFromIndexRight([1, 2, 3], -1); // 2