How to insert external stylesheet in JavaScript (dynamically) - Stack Overflow

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...with right path.

For example. I have script called foo.js. I'd like to insert stylesheet declaration which I can do with following instruction:

$('head').append('<link rel="stylesheet" href="/template/foo.css" type="text/css" />');

Problem: I have to put full path to the stylesheet file. So instead of /template/foo.css I have to put: http://hostname/directory/template/foo.css. I can't set it statically beacause script can be placed in different servers and different locations. So it can be: .css or .css.

It would be very useful if I can get path of foo.js file on the server. That would be good enough beacause then I could set stylesheet location based on the javascrpt's file.

...with right path.

For example. I have script called foo.js. I'd like to insert stylesheet declaration which I can do with following instruction:

$('head').append('<link rel="stylesheet" href="/template/foo.css" type="text/css" />');

Problem: I have to put full path to the stylesheet file. So instead of /template/foo.css I have to put: http://hostname/directory/template/foo.css. I can't set it statically beacause script can be placed in different servers and different locations. So it can be: http://foo./bar/foo.css or http://foo./foo.css.

It would be very useful if I can get path of foo.js file on the server. That would be good enough beacause then I could set stylesheet location based on the javascrpt's file.

• javascript

Share Improve this question Follow asked Jan 9, 2010 at 14:56 BaldBald 2,33633 gold badges2727 silver badges3333 bronze badges 4

• I have noticed that TinyMCE does that – Bald Commented Jan 9, 2010 at 14:58
• Is there a definite relationship between the locations of foo.js and foo.css, such as the same directory? Or perhaps between the html page and the css file? – Justin Love Commented Jan 9, 2010 at 15:34
• is there some kind of logic of where to find the css file ? – Gabriele Petrioli Commented Jan 9, 2010 at 16:09
• Yes. Let's just say that foo.js and foo.css are in the same directory. – Bald Commented Jan 10, 2010 at 12:35

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3 Answers 3

Sorted by: Reset to default 7

I've always done:

$('body').append('<link rel="stylesheet" href="/template/foo.css" type="text/css" />');

instead of head

Ahh... sorry I just realised what your problem is. One strategy is to extract the path of the script from the DOM itself:

$('script').each(function(i,el){
    var path = el.src.match(/^(.+)\/foo.js$/);
    if (path) {
        $('body').append('<link rel="stylesheet" ' +
                                'href="' + path[1] + '/foo.css" ' +
                                'type="text/css" />'
                        );
    }
})

This is a mon technique that I use to get the current script url:

var scriptUrl = (function() {
  var scripts = document.getElementsByTagName('script'),
      script = scripts[scripts.length - 1];

  return script.src;
})();

It works basically because when the script is being executed, it is the last script tag on the DOM.

You can use window.location and obtain the path from that. For example for this page it is:

>>> window.location
http://stackoverflow./questions/2033742/how-to-insert-external-stylesheet-in-javascript-dynamically

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