Invisible Captcha

Risk-based invisible verification. Behavior is tracked and analyzed; a slider or click challenge is shown only when the risk score exceeds a threshold.

Example

import { InvisibleCaptcha } from '@captcha-pro/core'

const captcha = new InvisibleCaptcha({
  el: '#submit-btn',
  trigger: 'click',
  riskAssessment: {
    threshold: 0.7, // Show challenge if risk score > 0.7
    behaviorCheck: {
      minInteractionTime: 500,
      trackAnalysis: true
    }
  },
  challengeType: 'slider', // 'slider' | 'click'
  onChallenge: () => console.log('Showing captcha challenge...'),
  onSuccess: () => form.submit(),
  onFail: () => console.log('Verification failed')
})

const score = captcha.getRiskScore()

Options

Option	Type	Default	Description
el	string | HTMLElement	-	Trigger element or selector
trigger	'click' | 'submit' | 'focus'	'click'	Trigger event
riskAssessment	RiskAssessmentOptions	-	Risk assessment config
challengeType	'slider' | 'click'	'slider'	Challenge captcha type
challengeOptions	object	-	Options for challenge captcha
onChallenge	() => void	-	Called when challenge is shown
onSuccess	() => void	-	Success callback
onFail	() => void	-	Fail callback

Instance Methods

Method	Description
getRiskScore()	Get current risk score (0-1)
showChallenge()	Manually show challenge
destroy()	Destroy instance