is-string-int

Check if a string represents an integer

isStringInt('123'); //=> true
isStringInt('1.23'); //=> false

Installation

Package managers

npm

npm install is-string-int

Bower

bower install is-string-int

Standalone

Download the script file directly.

API

isStringInt(string, option)

string: String
option: Object
Return: Boolean

See the test for more detailed specifications.

isStringInt('1'); //=> true
isStringInt('0'); //=> true
isStringInt('-1'); //=> true

isStringInt('0.1'); //=> false
isStringInt('foo'); //=> false
isStringInt(' 1'); //=> false
isStringInt('01'); //=> false
isStringInt('0x1'); //=> false
isStringInt('0e+0'); //=> false
isStringInt('NaN'); //=> false

option.parseLiteral

Type: Boolean
Default: false

Returns true even if the string includes octal/hexadecimal expressions and exponential notation. (By default it returns false in that case.)

isStringInt('01', {parseLiteral: true}); //=> true
isStringInt('0x1', {parseLiteral: true}); //=> true
isStringInt('0e+0', {parseLiteral: true}); //=> true

License

Copyright (c) 2014 - 2015 Shinnosuke Watanabe

Licensed under the MIT License.