MediaWiki:Gadget-collapsibleAdvancedSearch.js

Note: After publishing, you may have to bypass your browser's cache to see the changes.

Firefox / Safari: Hold Shift while clicking Reload, or press either Ctrl-F5 or Ctrl-R (⌘-R on a Mac)
Google Chrome: Press Ctrl-Shift-R (⌘-Shift-R on a Mac)
Internet Explorer / Edge: Hold Ctrl while clicking Refresh, or press Ctrl-F5
Opera: Press Ctrl-F5.

function docReady(fn) {
    // see if DOM is already available
    if (document.readyState === "complete" || document.readyState === "interactive") {
        // call on next available tick
        setTimeout(fn, 1);
    } else {
        document.addEventListener("DOMContentLoaded", fn);
    }
}    

docReady(collapsibleHeadings);

function collapsibleHeadings() {

  var headings = document.querySelectorAll('#mw-searchoptions');
  Array.prototype.forEach.call(headings, function (heading) {

    heading.innerHTML = ""; 

});
}