Issue with banner not appearing after importing HTML document

On my website, I have a picture banner at the top that I got from a web service. To make editing easier, I import the header.html code into the home.html file. The banner displays perfectly when I run header.html, but not when I run home.html. When I inspect element, I see space reserved for the banner but no content is visible.

Here is the code for home.html:

<html>
<head>

    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <title>Saisentan Music</title>
    <meta name="home page" content="Epic Orchestral Music by Taylor Barton">
    <link rel="stylesheet" href="style.css">

</head>

<body>

    <script src="https://www.w3schools.com/lib/w3.js"></script>
    <div w3-include-html="header.html"></div>
    <script>w3.includeHTML();</script>

    HOME

</body>

I will provide a link to the lengthy and hard-to-read header code document below, along with screenshots of both home.html and header.html:

Click here to view the document

javascripthtmlcss

Answer №1

The w3.includeHTML function scans all the tags in the document, identifies those with the attribute w3-include-html, attempts to retrieve the specified file, and then replaces the innerHTML of the tag with the content of that file. However, keep in mind that the scripts within the included file are not executed.

w3.includeHTML = function(cb) {
  var z, i, elmnt, file, xhttp;
  z = document.getElementsByTagName("*");
  for (i = 0; i < z.length; i++) {
    elmnt = z[i];
    file = elmnt.getAttribute("w3-include-html");
    if (file) {
      xhttp = new XMLHttpRequest();
      xhttp.onreadystatechange = function() {
        if (this.readyState == 4 && this.status == 200) {
          elmnt.innerHTML = this.responseText;
          elmnt.removeAttribute("w3-include-html");
          w3.includeHTML(cb);
        }
      }      
      xhttp.open("GET", file, true);
      xhttp.send();
      return;
    }
  }
  if (cb) cb();
};

To ensure that the scripts within the included files are executed, you will need to manually trigger them. Refer to this question on Stack Overflow for guidance.

Answer №2

Make sure to incorporate this script

<script src="https://www.example.com/lib/script.js"></script>

at the beginning of your body section or within the head tag

Answer №3

Upon reviewing the response from Sven the surfer, I came to the realization that my scripts were not executing as expected. The JavaScript code I had implemented for importing HTML was failing to run the necessary scripts. As a solution, I made the switch to utilizing an iframe tag to import the code for my banners, which proved to be effective in resolving the issue.

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