SCRIPT tag
You can insert JavaScript programs anywhere in HTML with the help of the SCRIPT tag.
For example:
[code language=”html”]
<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
</head>
<body>
Beginning of the document
<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-wp-preserve="%3Cscript%3E%0A%20%20%20%20alert(%20’Hello%2C%20world!’%20)%3B%0A%20%20%3C%2Fscript%3E" data-mce-resize="false" data-mce-placeholder="1" class="mce-object" width="20" height="20" alt="<script>" title="<script>" />
End of the document
</body>
</html>
[/code]