headings_detector.js

javascript: (function() {
    function callback() {
        function l() {
          $("strong.headings_detector").remove();
          if( !$('style#headings_detector') ){
            $('head').append(
              '<style id="headings_detector">'+
              '.headings_detector {'+
              'color:#FFF;font-weight:bold;font-size:small;background:yellow;'+
              '}'+
              '</style>'
            );
          }
          var count = 0;
          for( var i = 1 ; i<7 ; i++ ){
            count += $('h'+i)
              .prepend('<i class="headings_detector--before">&lt;h'+i+'&gt;</i>')
              .append('<i class="headings_detector--after">&lt;/h'+i+'&gt;</i>')
              .length;
            count += $('[role=heading][aria-level='+i+']')
              .prepend('<i class="headings_detector--before">&lt;[role=heading][aria-level='+i+']&gt;</i>')
              .append('<i class="headings_detector--after">&lt;/[role=heading][aria-level='+i+']&gt;</i>')
              .length;
          }
			    if( !count ) {
				    $('body').prepend('<strong style="color:black;font-weight:bold;font-family:sans-serif;font-size:small;background-color:yellow;margin:0 2px; padding:2px;" id="failure" role="status"></strong>');
				    $('#failure').html('No Headings Found on Page: ' + document.title);
				    setTimeout(function(){ $('#failure').remove(); }, 6000);
			    } else {
				    $('body').append('<div id="success" role="alert" style="position:absolute; width:0; height:0; clip: rect(0,0,0,0);"></div>');
				    $('#success').html('Success! Headings Found on Page: ' + document.title);
				    setTimeout(function(){ $('#success').remove(); }, 3000);
			    }
          $("script[src$='headings.js']").remove();
          s.remove();
        }
        l()
    }
    var s = document.createElement("script");
    s.addEventListener ? s.addEventListener("load", callback, !1) : s.readyState && (s.onreadystatechange = callback), s.src = "https://code.jquery.com/jquery-3.6.2.slim.min.js", document.body.appendChild(s);
})()