javascript - ng-repeat performance over thousands of elements without limit filter -


i'm generating svg graph in angular template based on array of following format:

[{x: 0, y: 1}, {x: 1, y: 2}, ...] -- array contain thousands of points.

while can render <path> element thousands of points, unacceptable performance occurs when use ng-repeat create <circle> element each point.

to ensure performance not due svg performance, copied angular generated svg output , created static .html file included 5 graphs containing 10,000 <circle> elements. static file rendered instantly. confirmed it's not boiler plate code generating , scaling points because without <circle> elements (only 2 <path> elements) performance exceptional.

i've narrowed down either ng-repeat's dom injection mechanics or fact ng-repeat creates child scope each element own dirty checking watchers. based on exhaustive research appears it's more latter.

here's template generates graph:

<svg width="1020" height="220">     <g class="series" transform="translate(10,10)">         <path class="series-fill" d="{{ series.path('fill') }}" stroke="none" fill="#ddd"></path>         <path class="series-path" d="{{ series.path('line') }}" stroke="#999" stroke-width="1" fill="none"></path>         <g class="series-points" stroke-width="1" stroke="#fff">             <circle ng-repeat="point in points" class="series-point" r="2" cx="{{ point.scaledx }}" cy="{{ point.scaledy }}"></circle>                                                                                                    </g>      </g> </svg>

tl;dr, angular or recommended way use ng-repeat-like behavior without dirty checking on each element or without creating new child scope watchers. paging/infinite scroll doesn't apply here.


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