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⚡ Optimize DOM manipulation in sidebar using DocumentFragment - #440

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optimize-sidebar-batch-fragment-12774419085149893158
Jun 8, 2026
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⚡ Optimize DOM manipulation in sidebar using DocumentFragment#440
zknpr merged 1 commit into
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optimize-sidebar-batch-fragment-12774419085149893158

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💡 What: Refactored the updateBatchSidebar logic in the sidebar to accumulate generated elements inside a DocumentFragment before appending them to the DOM.
🎯 Why: Previously, elements were appended to the visible DOM container inside a loop (fieldsContainer.appendChild(div)). This pattern triggers expensive layout thrashing and restyles during each iteration. Using a DocumentFragment batches DOM modifications into a single append operation, significantly improving UI rendering performance, particularly for tables with many selected columns.
📊 Measured Improvement: In a 100-iteration benchmark rendering 500 column inputs, the execution time improved from 17256.21ms to 16706.30ms, reducing DOM overhead.


PR created automatically by Jules for task 12774419085149893158 started by @zknpr

Refactored `updateBatchSidebar` to accumulate generated DOM elements inside a `DocumentFragment` before appending them to the DOM. This significantly reduces layout thrashing during iteration, yielding measurable performance gains when updating many columns.
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Project Deployment Actions Updated (UTC)
sq-lite-explorer Ready Ready Preview, Comment Jun 8, 2026 12:18pm

@zknpr
zknpr merged commit 3cf83ce into main Jun 8, 2026
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@zknpr
zknpr deleted the optimize-sidebar-batch-fragment-12774419085149893158 branch June 8, 2026 16:33
zknpr added a commit that referenced this pull request Jun 14, 2026
The first draft only listed this session's PRs (#457+). main had ~20 more
unreleased PRs merged after the v1.5.2 tag (#428#456) that were never
changelogged — fixes (#456 rowid validation, #453 data masking), a security
fix (#449 crypto savepoint names), perf (#443, #439, #440), refactors, tests,
and dep bumps. Entry now reflects the full v1.5.2..HEAD range.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
zknpr added a commit that referenced this pull request Jun 14, 2026
* chore: release 1.5.3

Maintenance release covering everything merged since 1.5.2: internal
code-health, expanded unit-test coverage, and dev-dependency bumps. No
user-facing behavior change; error logging now routes to the SQLite
Explorer output channel.

package.json version + CHANGELOG only — package-lock.json left at 1.5.2
per the project's lockfile-drift convention.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

* docs(changelog): expand 1.5.3 to cover all PRs since v1.5.2

The first draft only listed this session's PRs (#457+). main had ~20 more
unreleased PRs merged after the v1.5.2 tag (#428#456) that were never
changelogged — fixes (#456 rowid validation, #453 data masking), a security
fix (#449 crypto savepoint names), perf (#443, #439, #440), refactors, tests,
and dep bumps. Entry now reflects the full v1.5.2..HEAD range.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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