JavaScript tracking refers to the use of JavaScript code snippets embedded in e-commerce websites to monitor and record user behavior, interactions, and conversions. Common implementations include Google Analytics tags, Facebook Pixel, and custom event tracking that help merchants understand how visitors navigate their store, what products they view, and where they drop off in the purchase funnel.

In beauty e-commerce, JavaScript tracking is commonly used to monitor which product pages customers view most frequently, how they interact with shade selectors or ingredient lists, and at which point they abandon their cart. This data helps beauty brands optimize their product detail pages and personalize the shopping experience based on individual browsing behavior.