My secret to super-fast A/B test loading
How wrapping querySelector in a MutationObserver kills the FOUC in A/B tests — your variant fires the instant the target element lands in the DOM.
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#browser-api
2 posts tagged with this.
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2 posts tagged with this.
How wrapping querySelector in a MutationObserver kills the FOUC in A/B tests — your variant fires the instant the target element lands in the DOM.
Replacing my old rAF-based viewport tracker with IntersectionObserver — the simpler, lazier, dramatically less complicated way to fire A/B test events.