URL of current script in JavaScript

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, Nov 23 '10 at 01:21

score 4 · Accepted Answer · answered Nov 23 '10 at 01:21

4

In JQuery you could do:

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

answered Nov 23 '10 at 01:21

Ben

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Would you then use $.append to add a script to the document? I'm not sure it would load it then. – Fred Nov 23 '10 at 01:25
1

@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. – Ben Nov 23 '10 at 01:28

Josh Stodola · Answer 2 · 2010-11-23T01:31:28.360

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.

URL of current script in JavaScript

2 Answers2