Viewerframe Mode Refresh Top May 2026

render(); requestAnimationFrame(() => state.frameElement.scrollTop = 0; ); Symptoms: After refresh, there is 50px of whitespace above the first item. Cause: CSS padding or margin on the container or first child. Fix: Ensure padding-top is on the container, but the first child has no margin collapse.

document.getElementById('refreshBtn').addEventListener('click', refreshTop);

.viewerframe > :first-child margin-top: 0; viewerframe mode refresh top

setMode('view'); , 0); ;

function render() const html = state.items.map(item => <div class="item">$item</div> ).join(''); state.frameElement.innerHTML = html; render(); requestAnimationFrame(() => state

Symptoms: scrollTop = 0 doesn't work on iOS. Fix: Scroll the body or use window.scrollTo(0,0) on the frame’s parent. Mobile Safari requires -webkit-overflow-scrolling: touch; . Part 7: Performance Metrics Why should your team adopt "viewerframe mode refresh top"? Measure these KPIs:

<viewer-frame mode="refresh-top" auto-refresh-interval="30">  </viewer-frame> The phrase "viewerframe mode refresh top" is more than a search keyword—it is a specification for predictable, user-respecting UI behavior. By explicitly setting a mode where refreshes reset the viewport to the top, you trade a tiny amount of user scroll effort for massive gains in data consistency and interface clarity. document

Even if the user is halfway down, clicking the button executes scrollTop = 0 after the new data is in the DOM, guaranteeing the "top" behavior. Part 5: Advanced Use Cases & Optimization The basic implementation works, but production environments require nuance. Use Case 1: Infinite Scroll + Manual Refresh Top Platforms like Twitter allow infinite scroll but also a "See new Tweets" button. That button is a classic "viewerframe mode refresh top" pattern—but with a twist: it inserts new items at the top and optionally maintains relative position.