cookie-warn/Version

data-version="1"
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data-version invalidates stored consent when your privacy policy changes. When the library loads and finds a stored version that differs from data-version, it deletes all consent cookies and re-shows the banner — even if the user had previously accepted.

Actions

Code

HTML 
<!-- Start with data-version="1"; bump to "2", "3" etc. when your privacy policy changes -->
<script
  id="cookieScript"
  data-version="1"
  data-lang-en="{
    'text': 'We updated our privacy policy. Please review your cookie preferences.',
    'accept_text': 'Accept all',
    'accept_selected_text': 'Save settings',
    'reject_text': 'Necessary only',
    'categories': {
      'necessary': {'label': 'Necessary', 'description': 'Required for the site to function.', 'required': true},
      'analytics': {'label': 'Analytics', 'description': 'Help us understand how visitors use the site.'},
      'marketing': {'label': 'Marketing', 'description': 'Used for personalised ads and content.'}
    }
  }"
  data-callback="cookieWarnCallback"
  src="cookie-warn.min.js">
</script>

<!--
  Cookies written on consent:
    cookieWarn.categories = "necessary,analytics"
    cookieWarn.version    = "1"
    cookieWarn.timestamp  = "2025-05-21T10:00:00.000Z"

  When data-version is bumped to "3":
    stored version "2" != "3" → cookies cleared → banner re-appears
-->

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