feature request: setCaptcha support to pass SetCaptchaOption array

[joyexpr]

feature request: setCaptcha support to pass SetCaptchaOption array, for now, only can pass one SetCaptchaOption

for example, I want generate a captcha: "abcd"， and "ab" is red, "cd" is green

[Shashank3736]

Can you elaborate on the request? Like what you actually want, a feature to customise each character of a captcha.

[joyexpr]

if so, I can let user to enter the specified character, for example:

1. please enter the red characters
2. please enter the biggest 2 characters many many possibilities

[Shashank3736]

Hmm... make sense I will try to add this feature

[joyexpr]

by the way, is it a bug in captcha.ts:

if (option.colors && option.colors?.length > 2) {this._ctx.fillStyle = option.colors[getRandom(option.colors.length - 1)];}

should it be:

if (option.colors && option.colors?.length >= 2)  

[Shashank3736]

by the way, is it a bug in captcha.ts:

if (option.colors && option.colors?.length > 2) {this._ctx.fillStyle = option.colors[getRandom(option.colors.length - 1)];}

should it be:

if (option.colors && option.colors?.length >= 2)  

Yupp it is a bug. Actually I never use option.colors so I never noticed it. Thank you for raising it 😅