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Generate randomized strings of a specified length, fast. Only the length is necessary, but you can optionally generate patterns using any combination of numeric, alpha-numeric, alphabetical, special or custom characters.
Install with npm:
$ npm install --save randomatic
var randomize = require('randomatic');
randomize(pattern, length, options);
pattern
{String}: The pattern to use for randomizinglength
{Object}: The length of the string to generateThe pattern to use for randomizing
Patterns can contain any combination of the below characters, specified in any order.
Example:
To generate a 10-character randomized string using all available characters:
randomize('*', 10);
//=>
randomize('Aa0!', 10);
//=>
a
: Lowercase alpha characters (abcdefghijklmnopqrstuvwxyz'
)A
: Uppercase alpha characters (ABCDEFGHIJKLMNOPQRSTUVWXYZ'
)0
: Numeric characters (0123456789'
)!
: Special characters (~!@#$%^&()_+-={}[];\',.
)*
: All characters (all of the above combined)?
: Custom characters (pass a string of custom characters to the options)the length of the string to generate
Examples:
randomize('A', 5)
will generate a 5-character, uppercase, alphabetical, randomized string, e.g. KDJWJ
.randomize('0', 2)
will generate a 2-digit random numberrandomize('0', 3)
will generate a 3-digit random numberrandomize('0', 12)
will generate a 12-digit random numberrandomize('A0', 16)
will generate a 16-character, alpha-numeric randomized stringIf length
is left undefined, the length of the pattern in the first parameter will be used. For example:
randomize('00')
will generate a 2-digit random numberrandomize('000')
will generate a 3-digit random numberrandomize('0000')
will generate a 4-digit random number...randomize('AAAAA')
will generate a 5-character, uppercase alphabetical random string...These are just examples, see the tests for more use cases and examples.
Type: String
Default: undefined
Define a custom string to be randomized.
Example:
randomize('?', 20, {chars: 'jonschlinkert'})
will generate a 20-character randomized string from the letters contained in jonschlinkert
.randomize('?', {chars: 'jonschlinkert'})
will generate a 13-character randomized string from the letters contained in jonschlinkert
.randomize('A', 4)
(whitespace insenstive) would result in randomized 4-digit uppercase letters, like, ZAKH
, UJSL
... etc.randomize('AAAA')
is equivelant to randomize('A', 4)
randomize('AAA0')
and randomize('AA00')
and randomize('A0A0')
are equivelant to randomize('A0', 4)
randomize('aa')
: results in double-digit, randomized, lower-case letters (abcdefghijklmnopqrstuvwxyz
)randomize('AAA')
: results in triple-digit, randomized, upper-case letters (ABCDEFGHIJKLMNOPQRSTUVWXYZ
)randomize('0', 6)
: results in six-digit, randomized nubmers (0123456789
)randomize('!', 5)
: results in single-digit randomized, valid non-letter characters (~!@#$%^&()_+-={}[];\',.
)randomize('A!a0', 9)
: results in nine-digit, randomized characters (any of the above)The order in which the characters are defined is insignificant.
Pull requests and stars are always welcome. For bugs and feature requests, please create an issue.
| Commits | Contributor
|
| --- | --- |
| 36 | jonschlinkert |
| 1 | TrySound |
| 1 | paulmillr |
(This document was generated by verb-generate-readme (a verb generator), please don't edit the readme directly. Any changes to the readme must be made in .verb.md.)
To generate the readme and API documentation with verb:
$ npm install -g verb verb-generate-readme && verb
Install dev dependencies:
$ npm install -d && npm test
Jon Schlinkert
Copyright © 2016, Jon Schlinkert. Released under the MIT license.
This file was generated by verb-generate-readme, v0.2.0, on November 24, 2016.