为什么`filter`引发一些多少次？ [英] Why does `filter` trigger some many times?

问题描述

http://plnkr.co/edit/b1yGAwkzojF4BFWgpMsv?p=$p$ PVIEW

为什么过滤器引发一些多少次？

Why did filter trigger some many times?

我猜 {{名称|测试}} ，因为名称空在第一，然后将跳跳虎两次在得到了控制值。

I guess {{name|test}} will tigger twice because the name is null at first, then got value at controller.

为什么触发过滤时包含模板？

Why did it trigger filter when include template?

推荐答案

每个过滤器被称为至少每消化周期。 这SO回答有演示此小提琴。

Every filter is called at least once every digest cycle. This SO answer has a fiddle that demonstrates this.

当模板被加载时，你是在消化周期，因此所有的过滤器将被调用。

When a template is loaded, you are in a digest cycle, so all filters will be called.

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