Thanks; must I use the `const url = "http://example.com";
fetch(url` code? I already use the code in the same webpage I send data from (i.e. the code comes between a `<script>` tag in the very same webpage that the data is sent from). In other words, I should paste the **XHR/Fetch** code in the HTML of the same page I serve the request from. In **MediaWiki** it is easy to be done with *raw HTML mode enabled* so people can paste their HTML and JS directly in the same page they manipulate.