scriptroot

Get a fully qualified URL for the folder a given script is in.

The basic purpose of this script is to facilitate the loading of assets relative to the script rather than relative to the document.

Usage

This is designed to be included in scripts using Browserify, but could reasonably be used as a global if you know your environment and understand how it works.

// Require script root.
// Ensure this isn't run inside a domready listener. It must be executed when
// the script loads.
var scriptroot = require('scriptroot');

// log the script root
console.log(scriptroot());

<script src="http://example.com/scripts/fancyscript.js"></script>

This will log http://example.com/scripts/ to the console.

Huge caveat

This will not work with scripts which have async or defer attributes. It relies on being executed at the point at which the script tag is encountered during DOM parsing.