URL of current script in JavaScript [duplicate]

Question

How can I find out the URL of the JS file that was called?

Let's say the JS file (which is part of a library) and the HTML file (which is the application) are on a different server. To find out the URL of the HTML file is easy. But how can I find out the server name and path of the JS files' server within the JS file itself? (Edit: There is a loader which invokes other JS files of thsi library in the same directory structure)

Preferably a JQuery or pure JS solution.

Edit:

After I learned from your answers and comments I decided it would be cleaner to actually move the loader code to the first server, where also the html lives, which avoids the problem.

Couldn't you use php to dynamically create a js file and include any js code you want? — Fred
– Fred, Commented Nov 23, 2010 at 1:21

Ben · Accepted Answer · 2010-11-23 01:21:26Z

4

In JQuery you could do:

$('script').each(function(i, e) {
    alert($(e).attr('src'));
});

answered Nov 23, 2010 at 1:21

Ben

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2 Comments

Fred Over a year ago

Would you then use $.append to add a script to the document? I'm not sure it would load it then.

Ben Over a year ago

@Fred - To load an async JS file you should use getScript(), just to make sure your callback is called after the JS file is completely loaded.

Josh Stodola · Accepted Answer · 2010-11-23 01:31:28Z

You can iterate through the script tags and check the SRC, I suppose...

var els = document.getElementsByTagName("script");
var str = "";

for(var i = 0; i < els.length; i++) {
  var src = els[i].src;
  if(src.length > 0)
    str += src + "\n";
}

alert(str);

Paste the following into your browser bar to see the URLs of the scripts on this page...

javascript:var els = document.getElementsByTagName("script"); var str = ""; for(var i = 0; i < els.length; i++) { var src = els[i].src; if(src.length > 0) { str += src + "\n";}}alert(str);

Note: IE appears to only iterate through <script> elements within the <body> tag.

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