angular.js - How does angular1 use the data obtained after cross-domain

Question

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1. In jquery, cross-domain data can be used in the success function. The principle is to use the src of the script note to cross-domain. Add ?callback=func to the url; func is added by jq A temporary global function...
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2. I found this picture on Baidu in angular for a long time. The tutorial said that after adding callback=JSON_CALLBACK to the url (it must be written as JSON_CALLBACK), when the server responds, the success function will be executed. However, I did it and reported an error. Got it!

3. Then I changed the code to this, no error was reported, and the cross-domain was successful, but ajax is asynchronous. How to use the obtained data in the angular controller?

Answer 1

jsonp,服务器端是根据你后面callback的函数名，给你返回一段包装的json数据,并不一定就是JSON_CALLBACK, you can choose the name at will, but your js file must have a consistent function name. You can read this article
jsonp

Answer 2

Cross-domain needs to be set up in the background, so it has nothing to do with angular cross-domain. . .

Answer 3

There are many ways, the more elegant one is to create onefactory,或者service，whatever，返回一个对象，factory或service里异步请求数据，返回的数据存储到返回的对象下，属性名随你起，然后吧这个玩意注入到你想使用的controller里，但是因为是异步的，所以controller执行的时候可能返回的对象还是空，需要bind到$scope上才能自动更新。要不你可以随意一点，直接在controller里异步执行，回调里直接给到$scope.
If asynchronous data needs to be displayed immediately, it is better to execute asynchronously first and initialize angular in the callback.