AngularJS：$ evalAsync VS $超时 [英] AngularJS : $evalAsync vs $timeout

问题描述

我一直在使用AngularJS一小会儿，现在，已经发现需要使用 $超时在每过一段时间（似乎通常是初始化一个jQuery插件）。

I've been using AngularJS for a little while now, and have found the need to use $timeout every once in a while (Seems to usually be to init a jQuery plugin).

最近，我一直在试图让消化周期的更好，更深入的了解，而且我碰到的 $ evalAsync 功能。

Recently, I've been trying to get a better and more in-depth understanding of the digest cycle, and I came across $evalAsync function.

这似乎是这个函数产生类似的结果为 $超时，只有你不给它耽误。我每次使用 $超时已经以0延迟，所以现在我想知道如果我应该用 $ evalAsync 代替。

It seems like that function produces similar results to $timeout, only you don't give it delay. Every time I've used $timeout it has been with a delay of 0, so now I'm wondering if I should have used $evalAsync instead.

有没有两者之间有什么根本的区别？你会用什么情况下，一个比其他？我想获得的时候使用哪一种更好的感觉。

Are there any fundamental differences between the two? What cases would you use one over the other? I'd like to get a better feeling of when to use which one.

推荐答案

最近，我在这里基本上回答了这个问题：的http：//计算器.COM / A /二十一万五千九百四十五分之一千七百二十三万九千零八十四
（这个答案的链接与一些MISKO GitHub的交流。）

I recently answered essentially this question here: http://stackoverflow.com/a/17239084/215945 (That answer links to some github exchanges with Misko.)

要总结一下：

• 如果code采用排队的 $ evalAsync从指令，它应该运行的之后的DOM中已被角操纵的，但是的前浏览器呈现


• 如果code采用排队的 $ evalAsync从控制器，它应该运行的前的DOM中已被角操纵（和浏览器呈现前） - - 很少做你想做这个


• 如果code使用的 $超时排队，它应该运行的之后的DOM中已被角操纵和的之后的了浏览器呈现（这可能会导致在某些情况下的闪烁）

• if code is queued using $evalAsync from a directive, it should run after the DOM has been manipulated by Angular, but before the browser renders
• if code is queued using $evalAsync from a controller, it should run before the DOM has been manipulated by Angular (and before the browser renders) -- rarely do you want this
• if code is queued using $timeout, it should run after the DOM has been manipulated by Angular, and after the browser renders (which may cause flicker in some cases)

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