Base62 is a priority system to the base 62, which for encoding large numbers using ASCII is character. The digits 0-9 (value 0-9), uppercase letters A-Z (value 10-35) and lowercase letters a-z (value 36-61) are used.
Due to the high number of base formed shorter strings than with the decimal or hexadecimal system , which mainly offers two advantages:
- They can be entered by a human being faster and with a smaller risk of error. In this case, a font should be selected in which characters that can be confused, such as small L and large i, or zero, and large O, are distinguishable.
- Length restrictions, eg when a number is to be used as part of an identifier or file name, can be bypassed. However, it should be noted that the processing system is case-sensitive.
npm install base62
or for yarn:
yarn add base62
Base62 =Base62 // 'g7'Base62 // 999
The default character set is
0-9a-zA-Z. This can be updated to a custom character set. Naturally, it must be 62 characters long.
Instead of the character set
0-9a-zA-Z you want to use
0-9A-Za-z, call the
setCharacterSet() method on the Base62 object passing in the string
"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz". Note that all characters must be unique.
Base62 =Base62;Base62 // 'G7'Base62 // 999
Copyright (c) 2016 Andrew Nesbitt. See LICENSE for details.