| Leo Repp | 58b9f11 | 2021-11-22 11:57:47 +0100 | [diff] [blame^] | 1 | var toString = require('./toString'); |
| 2 | |
| 3 | /** Used to generate unique IDs. */ |
| 4 | var idCounter = 0; |
| 5 | |
| 6 | /** |
| 7 | * Generates a unique ID. If `prefix` is given, the ID is appended to it. |
| 8 | * |
| 9 | * @static |
| 10 | * @since 0.1.0 |
| 11 | * @memberOf _ |
| 12 | * @category Util |
| 13 | * @param {string} [prefix=''] The value to prefix the ID with. |
| 14 | * @returns {string} Returns the unique ID. |
| 15 | * @example |
| 16 | * |
| 17 | * _.uniqueId('contact_'); |
| 18 | * // => 'contact_104' |
| 19 | * |
| 20 | * _.uniqueId(); |
| 21 | * // => '105' |
| 22 | */ |
| 23 | function uniqueId(prefix) { |
| 24 | var id = ++idCounter; |
| 25 | return toString(prefix) + id; |
| 26 | } |
| 27 | |
| 28 | module.exports = uniqueId; |