Javascript文件中的代码可以知道自己的域/ URL [英] Can code in a Javascript file know its own domain/URL

问题描述

如果我有一个站点，example.com和该站点上的页面引用了subdomain.example.com/serveAd.js上的Javascript - 是否有一种方法可以在serveAd.js中知道自己的URL，或者它是从哪个域下载的？

If I have a site, example.com, and a page on that site references a Javascript at subdomain.example.com/serveAd.js -- is there a way from within serveAd.js to know its own URL, or the domain from which it was downloaded?

（JS当然可以知道调用它的页面。我想知道JS是否知道它自己的来源。 ）

(The JS can certainly know all about the page that called it. I want to know if the JS knows about its own origin.)

推荐答案

如果你使用的是jquery，你可以通过这种方式获得完整的URL：

If you were using jquery, you could get the full url with this kind of thing:

var fullJsUrl= $('script[src$=serveAd.js]').attr('src');

如果不使用jquery，可能需要更多工作，但你明白了;）

If not using jquery, it may take more work, but you get the idea ;)

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