添加新项目后 ngRepeat 会重新渲染所有项目吗? [英] Does ngRepeat rerender all items after adding an new item?

问题描述

如果在执行期间将一个项目添加到使用 ngRepeat 呈现的数组中，它是否会重绘所有项目?

If during execution an item is added to an array that is rendered using ngRepeat, does it redraw all items?

推荐答案

从 Angular 1.2 开始，我们就有了 'track by' 选项，可以防止转发器重新渲染所有项目.

Since Angular 1.2 we have the 'track by' option which will prevent the repeater from re-rendering all the items.

示例:

ng-repeat="task in tasks track by task.id"

看看这个解释:http://www.codelord.net/2014/04/15/improving-ng-repeat-performance-with-track-by/

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