Meaning
Browser execution triggers the collection of user data and the delivery of digital assets through small blocks of code. The client side javascript tag operates within the visitor web browser rather than on the host server. This method allows for the tracking of mouse movements or scroll depth that a server cannot see.
Execution Environment
Web browsers provide the resources necessary to run the scripts required for measurement. When a client side javascript tag is loaded, it competes with other page elements for processing power and memory.
Data Governance
Privacy regulations govern the type of information a script can extract from a user device. A client side javascript tag must comply with transparency requirements by only firing after the user has provided consent through a management platform. Security protocols often block scripts from unauthorized domains to prevent data leakage.
Latency Impact
Page load speed decreases as the number of external calls made by the browser increases. A client side javascript tag adds to the total weight of the page, which can lead to higher bounce rates if the site becomes unresponsive. Developers often use asynchronous loading to ensure the script does not block the rendering of visible content, allowing the user to interact with the site while the tracking functions complete in the background.
