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Editorial Team
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Asked: 2026-06-05T08:27:14+00:00

I wonder, how can I display HTML content using Javascript, from what I know

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I wonder, how can I display HTML content using Javascript, from what I know and been searching it’s simply not possible to do that.

But I have found a javascript code, that is displaying HTML content (not raw) when there is frame in the URL parameters.

Here it is:

http://otslist.eu/ratingWidget.js – Here you can find the raw javascript code.

http://otslist.eu/ratingWidget.js?frame=1 – And here it is displaying the HTML.

How is that possible? How to do something like that?

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1 Answer

  1. Editorial Team

    The JavaScript you see is a PHP script on the server. Use some browser/network debugger tool to check the HTTP response:

    HTTP/1.1 200 OK 
Server              nginx/0.7.67
Date                Wed, 06 Jun 2012 11:50:44 GMT
Content-Type        text/html
Connection          keep-alive
X-Powered-By        PHP/5.3.10
Expires             Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control       no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma              no-cache
Content-Encoding    gzip

    and see that it is powered by PHP. So it is the output of a PHP script and not a regular JavaScript document.

    The PHP script outputs a JavScript when frame=1 is omitted.
    When the frame=1 is included, it tells the PHP script to embed the JavaScript into an HTML page and serve that.

    Update: The PHP script could look like this:

    <?php
$asHTML = $_GET['frame'] == 1;

if($asHTML) {
  // Generate HTTP headers for HTML, like
  header("Content-Type", "text/html");
} else {
  // Generate HTTP headers for the JavaScript, like
  header("Content-Type", "text/javascript");
}

if($asHTML) {
  // Generate HTML top document part
  echo "<html><head><title>Title</title></head><body><script type=\"text/javascript\">";
  // Other HTML header stuff here as well, see the live example (as I am too lazy to type it here)
}

// Read the JavaScript from a file that is available on the server
readfile("javascript.js");

if($asHTML) {
  // Close HTML tags
  echo "</script></body></html>";
}

    Note that I quickly typed this together, so it is probably full of errors. But it should give you the general idea.

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