为什么混合插值和表达式是不好的做法 [英] Why mixing interpolation and expressions is bad practice
问题描述
来自文档:
<块引用>在表达式中嵌入插值标记
<块引用>注意: AngularJS 指令属性采用带有嵌入表达式的表达式或 插值标记.在表达式中嵌入插值标记被认为是不好的做法:
我正在寻找一个写得很好的规范答案，我可以为读者指出.
来自文档:
<块引用>为什么混合插值和表达式是不好的做法:
它增加了标记的复杂性
不能保证它适用于每个指令，因为插值本身就是一个指令.如果另一个指令在插值运行之前访问属性数据，它将获得原始插值标记而不是数据.
它会影响性能，因为插值会向范围添加另一个观察者.
From the Docs:
Embedding interpolation markup inside expressions
Note: AngularJS directive attributes take either expressions or interpolation markup with embedded expressions. It is considered bad practice to embed interpolation markup inside an expression:
I am looking for a well written canonical answer to which I can point readers.
From the Docs:
Why mixing interpolation and expressions is bad practice:
It increases the complexity of the markup
There is no guarantee that it works for every directive, because interpolation itself is a directive. If another directive accesses attribute data before interpolation has run, it will get the raw interpolation markup and not data.
It impacts performance, as interpolation adds another watcher to the scope.
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