title: Determine HTML page that called a function in an external js file
body: <p>Is it possible to determine this at runtime?</p>
  
  <p>contents of external.js:</p>
  
  <pre><code>function x() {
  
    //can i get the path/name of the html file that included this js file?
  
    //which is test.html
  
  }
  </code></pre>
  
  <p>contents of test.html</p>
  
  <p>script src="external.js"</p>