Underscore.JS - lastIndexOf method

Syntax

_.lastIndexOf(array, value, [fromIndex])

lastIndexOf method returns index of value in array. If fromIndex is passed, search will start fromIndex in array.

Example

var _ = require('underscore');

var list = [1, 2, 3, 4, 5, 6, 3, 4]
//Example: get last index of 3
result = _.lastIndexOf(list, 3);
console.log(result)

//Example: get last index of 3 starting from 4th index
result = _.lastIndexOf(list, 3, 4 );
console.log(result)

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

Command

\>node tester.js

Output

6
2