angular-ui/ui-grid

With large data and grouping, expand/collapse rows seems to be very slow.

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#4,988 opened on Jan 19, 2016

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 (4 comments) (2 reactions) (0 assignees)JavaScript (5,395 stars) (2,496 forks)batch import
help wantedseverity: performancetype: enhancement

Description

I have more than 60000 rows and group them into several groups. When expand/collapse rows, it take at least several seconds to re-draw the grid.

Here is a plunker to show the problem: http://plnkr.co/edit/5C7B3RU0kLszzgyr7xyf?p=preview

However, in v2 with the same data set and grouping setting, it seems to be quite fast. Is there any way to improve the performance or why it becomes so slow in v3.

Contributor guide

Tech stack
javascripthtmlcss
Domain
frontendperformance
Issue type
performance
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
4
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
3-5 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
JavaScriptAngularJSDOM renderingprofiling
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
20
Research direction
Reproduce the performance issue using the provided plunker link. Investigate the grid's rendering pipeline, specifically the expand/collapse logic. Compare the DOM manipulation patterns in v3 with v2 to identify what changed. Consider profiling with browser developer tools to pinpoint bottlenecks. Explore implementing virtual scrolling or incremental rendering to handle large datasets.