angular.js性能问题 [英] angular.js performance issues

问题描述

性能选项卡上Batarang显示，在应用程序的根，角被调用函数看起来像：
函数（）{VAR E，F，I =一。$的eval（H），M = HC（我，。

Batarang on the performance tab shows that on the app's root, angular is calling function that looks like that: function (a){var e,f,i=a.$eval(h),m=hc(i,.

据batarang这是痛苦的缓慢，当我得到了应用多一点行，它会减慢应用程序和崩溃火狐（虽然Chrome仍然会处理它）。那么到底什么是它做什么？我该如何解决呢？

According to batarang it's painfully slow and when I get little more rows on the app, it slows down the app and crashes Firefox (although Chrome still handles it). So what the heck is it doing? How can I fix that?

推荐答案

东西建立一个角度应用程序你在哪里动态扩展的ngRepeat的内容时要考虑的。您设置每ngRepeat，建立了一个手表。每个{{结合}}或者ngModel你重复做里面，设置了另一个手表，等等。每个那些创建功能和对象实例，并且还需要在每$消化处理。因此，如果您遇到了性能问题，则可能需要实施写出你的数据，而无需设置这些多余的手表定制指令，让你有点更高性能。那我的2美分。

Something to consider when building an Angular application where you're dynamically expanding the contents of an ngRepeat. Every ngRepeat you set up, sets up a watch. Every {{binding}} or ngModel you do inside of that repeat, sets up another watch, and so on. Each of those creates function and object instances, and also needs to be processed on every $digest. So, if your running into performance issues, you may need to implement a custom directive that writes out your data without setting up those superfluous watches, so you're a little more performant. That my 2 cents.

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