javascriptscript-tag

How can an external JavaScript determine the URL from which it was included?

I have an external JavaScript file and I'd like to know the src attribute value URL that was used to include it in the tag from the HTML document. For example:

<script src='https://foo.bar/baz.js'><script>

And then inside baz.js I'd like to write this code:

let mysrc = getMySrc() // Should return https://foo.bar/baz.js

Is it possible to write a getMySrc() function that does this?

Solution

  • Use:

    const src = document.currentScript.getAttribute('src');

    This works because document.currentScript will refer to the script tag corresponding to the currently running script.