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Conceptvirtualized rendering / 虚拟列表 / windowing

Virtual Rendering (Virtualized List Rendering)

A front-end performance optimization technique that renders only the DOM nodes visible within the current viewport, dynamically recycling and reusing off-screen nodes. This approach keeps the total DOM node count manageable when rendering large-scale lists.

Timeline (last 90 days)

Sep 23

The difficulty of virtualization in the diff scenario lies in variable row heights—ordinary code lines, collapsed blocks, and inline comments each have different heights.

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Sep 23

When a comment is expanded or collapsed, the offsets of all subsequent items need to be recalculated, and improper handling will result in content jumping or positioning misalignment.

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