Register invitation code assistant

Extract the invitation code on the web page(as most bbs which need invitation code to register) automatically, detect the invitation code list manually filled in and check the validity automatically.

* Optional: The image verification code needs to be filled with the identification interface, which can be replaced by a local server below. If you don’t set the interface, you need to manually enter the image verification code.
github.com/hoothin/imgCodeCheck

Custom mask rules for bullet boxes:
*: The asterisk will be replaced with 0-9 and a-f 16 characters
[abcd]: will be replaced with a, b, c, d respectively
[x-y]: will be replaced with all characters between x and y
Multiple masks are supported

Sample invitation code:
12*d means 121d 122d...12fd
ec[1-3]f means ec1f ec2f ec3f
f9[1a-cf]0a means f910a f9a0a f9b0a f9c0a f9f0a