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[angular] 7. 表达式 {{yourModel}} 是如何工作的？ #531

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qiilee opened this issue Oct 15, 2019 · 0 comments

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Angular

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qiilee commented Oct 15, 2019

答案：

它依赖于 $interpolation服务，在初始化页面html后，它会找到这些表达式，并且进行标记，于是每遇见一个 {{}} ，则会设置一个 $watch 。而 $interpolation 会返回一个带有上下文参数的函数，最后该函数执行，则算是表达式 $parse 到那个作用域上。

qiilee added the Angular label

qiilee added this to In progress in 每日一题认领区

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