jQuery Password Generator (v2) Using jQuery to quickly and easily generate passwords. Script Demo Using all of the character sets: Using both the a-z and A-Z character sets: Using only the A-Z character set: Using only the a-z character set: Using only the number character set: How It Works data-size attribute is used to set the number of characters that is used in the field, if you need a password with 12 characters, then set this attribute to 12. data-character-set attribute ...