问题描述
我优化我的大量应用。我很困惑以下两种方法之间，请大家帮忙来决定哪一个是速度更快。
I am optimizing my large application. I am confused between following two approach, please help to decide which one is faster.
内嵌样式属性
<div style="background-color:{{item.color}}"></div>
使用纳克风格
<div ng-style="{'background-color':item.color}"></div>
是一次风格
<div once-style="{'background-color':item.color}"></div>
注意：对于键式，我用AngularOnce指令
Note : For once-style, I have used AngularOnce Directive.
在此先感谢。请告诉我哪一个是速度更快，这是为什么。
Thanks in advance. Please tell me which one is faster and why.
推荐答案
由于您优化相当大的应用，性能绝对是下的问题，我觉得 ngStyle 性能更好因为它建立的手表型号和将更新仅如果模型改变了看法。
Since you are optimizing your considerably large application, performance is definitely under question and I think ngStyle performs better as it sets up watch on the model and will update the view only if the model has changed.
所以，我会去与 ngStyle 或 onceStyle 根据您的情况：
So I would go with ngStyle or onceStyle depending on your scenario:
<div once-style="{'background-color':item.color}"></div>
使用 {{}} 将角更新绑定每个周期消化，即使值并未改变。
Using {{}} will make Angular update the binding every digest cycle, even if the value has not changed.
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