|
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;
|