Underscore.JS - contains method

Syntax

_.contains(list, value, [fromIndex])

contains method returns true if a value is present in a given list. fromIndex can be used to search at given index.

Example

var _ = require('underscore');

var list = [1, 2, 3, 5]
//Example 1. check if any number is present
var result = _.contains(list, 2);
console.log(result);

//Example 2. check if any number is present from given index
var result = _.contains(list, 2, 2);
console.log(result);

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

Command

\>node tester.js

Output

true
false