This documentation is for an old version of this tracker!
2 General parameters
2.1 Loading Snowplow.js
2.2 Initialising a tracker
2.2.1 Setting the application ID
2.2.2 Setting the platform
2.2.3 Configuring the cookie domain
2.2.4 Configuring the cookie name
2.2.5 Configuring the cookie samesite attribute
2.2.6 Configuring the cookie secure attribute
2.2.7 Configuring base 64 encoding
2.2.8 Respecting Do Not Track
2.2.9 Opt-out cookie
2.2.10 User fingerprinting
2.2.11 Setting the user fingerprint seed
2.2.12 Setting the page unload pause
2.2.13 Setting the event request protocol
2.2.14 Setting an unsecure event request protocol
2.2.15 Configuring the session cookie duration
2.2.16 Configuring the storage strategy
2.2.17 Adding predefined contexts
2.2.17.1 webPage context
2.2.17.2 performanceTiming context
2.2.17.3 gaCookies context
2.2.17.4 geolocation context
2.2.17.6 optimizelyExperiments context
2.2.17.7 optimizelyStates context
2.2.17.8 optimizelyVariations context
2.2.17.9 optimizelyVisitor context
2.2.17.10 optimizelyAudiences context
2.2.17.11 optimizelyDimensions context
2.2.17.12 optimizelySummary context
2.2.17.13 optimizelyXSummary context
2.2.17.14 parrable context
2.2.18 POST support
2.2.18.1 Beacon API support
2.2.18.1 POST path
2.2.19 Configuring cross-domain tracking
2.2.20 Configuring the maximum payload size in bytes
2.2.21 Automatically discover and set the root domain
2.2.22 Configuring the cookies lifetime
2.2.23 Tracking prerendered pages
2.2.24 Limiting Local Storage queue size
2.2.25 Reset Page Ping on Page View
2.3 Other parameters
2.3.1 Setting the user ID
2.3.1.1 setUserId
2.3.1.2 setUserIdFromLocation
2.3.1.3 setUserIdFromReferrer
2.3.1.4 setUserIdFromCookie
2.3.2 Setting a custom page URL and referrer URL
2.4 Setting onload callbacks
2.5 Managing multiple trackers
2.6 How the Tracker stores state
The session cookie
The ID cookie
The Clojure Collector cookie
2.7 Getting the user ID from the Snowplow cookie
2.8 Optional timestamp argument
2.9 Preserving pageViewId