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Scroll to Top Button

Scroll to Top button that appears after scrolling down 20%

นี่คือเวอร์ชันของสคริปต์นี้ที่โค้ดมีการอัปเดต แสดงเวอร์ชันทั้งหมด

  • v2.3 10-05-2026
  • v2.2 07-05-2026
    • Minor update
  • v2.2 06-05-2026
    • Improvement and optimization.
  • v2.1 04-05-2026
    • Version: bumped to 2.2
    • Icon: replaced SVG with text glyph ↑↑
    • Size: button diameter set to 40px
    • Layout: enforced explicit font-size and line-height for the glyph to fix vertical alignment.
    • Isolation: kept a closed Shadow DOM and inline styles to avoid site CSS interference.
    • Behavior preserved: draggable positioning, saved position in localStorage, auto-hide on scroll, smooth scroll on click, and keyboard activation retained.
    • Storage key: unchanged (r2t_pos_v1).
  • v2.0 28-04-2026
    • Moved the button into a shadow root to prevent site CSS interference.
    • Stable dragging, switched to pointer events.
    • Position persistence in localStorage.
    • Replaced the arrow with an SVG path.
    • Replaced descriptive IDs/classes with short names.
  • v1.0 11-04-2026