Lodash - uniqueId method

Syntax

_.uniqueId([prefix=''])

Generates a unique ID. If prefix is given, the ID is appended to it.

Arguments

• [prefix=''] (string) − The value to prefix the ID with.

Output

• (string) − Returns the unique ID.

Example

var _ = require('lodash');

console.log(_.uniqueId('id_'));
console.log(_.uniqueId());

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

Command

\>node tester.js

Output

id_1
2