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How may I reference the script tag that loaded the currently-executing script?

Answer 1

+1 A:

Probably the easiest thing to do would be to give your scrip tag an id attribute.

Greg 2008-12-31 20:29:42

Answer 2

+5 A:

A word of warning: modifying the DOM while it is still loading will cause you a world of hurt in IE6 & IE7.

You're gonna be better off running that code after page load.

Triptych 2008-12-31 20:32:36

Answer 3

+1 A:

I've got this, which is working in FF3, IE6 & 7. The methods in the on-demand loaded scripts aren't available until page load is complete, but this is still very useful.

//handle on-demand loading of javascripts
makescript = function(url){
    var v = document.createElement('script');
    v.src=url;
    v.type='text/javascript';

    //insertAfter. Get last <script> tag in DOM
    d=document.getElementsByTagName('script')[(document.getElementsByTagName('script').length-1)];
    d.parentNode.insertBefore( v, d.nextSibling );
}

2008-12-31 21:12:16

Answer 4

A:

If you can assume the file name of the script, you can find it. I've only really tested the following function in Firefox so far.

  function findMe(tag, attr, file) {
    var tags = document.getElementsByTagName(tag);
    var r = new RegExp(file + '$');
    for (var i = 0;i < tags.length;i++) {
      if (r.exec(tags[i][attr])) {
        return tags[i][attr];
      }
    }
  };
  var element = findMe('script', 'src', 'scripts.js');

Justin Love 2009-11-11 02:05:20

Answer 5

+1 A:

Since scripts are executed sequentially, the currently executed script tag is always the last script tag on the page until then. So, to get the script tag, you can do:

var scripts = document.getElementsByTagName( 'script' );
var thisScriptTag = scripts[ scripts.length - 1 ];

Coffee Bite 2010-07-24 19:29:04

Answer 6

A:

Script are executed sequentially only if they do not have either a "defer" or an "async" attribute. Knowing one of the possible ID/SRC/TITLE attributes of the script tag could work also in those cases. So both Greg and Justin suggestions are correct.

There is already a proposal for a "document.currentScript" on the WHATWG lists.

Diego Perini 2010-09-12 16:56:02

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How may I reference the script tag that loaded the currently-executing script?

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