在没有目标的方法上可以使用dojo方面吗？ [英] is it possible to use dojo aspect on a method with no target?

问题描述

我有一个模块如下：

define([...], function(...){
  function anothermethod() {...}
  function request() {....}
  request.anothermethod = anothermethod;
  return request;
}

现在我想在 anothermethod上使用dojo方面方法的请求方法（关闭）可以吗？如果是这样，我应该放在目标参数中？

Now i want to use dojo aspect before on the anothermethod method of the request method (closure). is it possible? If so, what should i put in the target parameter?

aspect.before(target, methodName, advisingFunction);

另一个方法不是直接调用的请求方法被调用，间接调用anothermethod：

And the anothermethod is not called directly. First the request method is called which calls the anothermethod indirectly:

require(['dojo/aspect'], function(aspect){
  function anothermethod() {
    console.log('another method');
  }
  function beforeanothermethod() {
    console.log('before another method');
  }
  function request() {
    anothermethod();
  }
  request.anothermethod = anothermethod;
  aspect.before(request, 'anothermethod', beforeanothermethod);
  request();
})

https://jsfiddle.net/ahwgw5tb/1/

推荐答案

在您的情况下，您已经有一个目标，即请求：

In your case, you already have a target, being request:

aspect.before(request, 'anothermethod', function() {
  // Do something
});

但是要回答你的原始问题，不，你不能。你总是需要一个目标。在正常功能的情况下，目标将是该功能所在的本地范围，但无法访问。

But to answer your original question, no you can't. You always need a target. The target in case of a normal function, would be the local scope where that function lives in, but there's no way to access that.

所以，最好的解决方案是将它添加到特定对象（请求）像您一样。

So, the best solution is to add it to a specific object (request) like you did.

这篇关于在没有目标的方法上可以使用dojo方面吗？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！