Error: Trying to assign a value to null in the innerHTML property has resulted in an uncaught TypeError

I've been struggling with an issue in my code where the innerHTML is not updating the content inside the content_holder div. Any help would be greatly appreciated!

Despite trying different methods and conducting extensive research, I haven't been able to resolve this error.

<head>

        <link rel="stylesheet" href="styles/default.css" />

  </head>
  <script type="text/javascript" src="jquery/jquery.js"></script>
  <script type="text/javascript">

          function news_clicked(){

          $("#content_holder").fadeOut(200);
          document.getElementById("#content_holder").innerHTML=("<?php("news_include.php"); ?>");
          $("#content_holder").fadeIn(200);

          }

  </script>

  <body>


        <header id="header_bar">

        <div id="top_holder">

             <div id="top_holder_left">
                <a id="logo"></a>
             </div>

             <div id="top_holder_right">
                <a class="nav_button" href="#">HOME</a>
                <a class="nav_button" onclick="news_clicked()" href="#">NEWS</a>
                <a class="nav_button" href="#">GIGS</a>
                <a class="nav_button" href="#">MUSIC</a>
                <a class="nav_button" href="#">VIDEOS</a>
                <a class="nav_button" href="#">SOCIAL</a>
             </div>

        </div>

        </header>

                 <div id="content_holder">

                      <?php include("music_include.php"); ?>

                 </div>

  </body>

Answer №1

To access the content_holder element, use:

document.getElementById("content_holder")

Do not use:

document.getElementById("#content_holder")

The # symbol is not valid for getElementById. This method requires a plain element id and not a selector.

Answer №2

There have been numerous occasions when I encountered this error, and each time it boiled down to a simple mistake on my end. It usually happens when attempting to call an id for a div that is not present on the current page. Always double-check to ensure that the element you are referencing actually exists on the page you intend to modify.

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