Lodash - lastIndexOf method

Syntax

_.lastIndexOf(array, value, [fromIndex=array.length-1])

This method is like _.indexOf except that it iterates over elements of array from right to left.

Arguments

• array (Array) − The array to inspect.

• value (*) − The value to search for.

• [fromIndex=array.length-1] (number) − The index to search from.

Output

• (number) − Returns the index of the matched value, else -1.

Example

var _ = require('lodash');
var list = [1, 2, 3, 2, 5, 6, 2];

var result = _.lastIndexOf(list,2)
console.log(result);

var result = _.lastIndexOf(list,2,3)
console.log(result);

Save the above program in tester.js. Run the following command to execute this program.

Command

\>node tester.js

Output

6
3