After travelling back in Firefox history, JavaScript won’t run

by

Set an empty function to be called on window.onunload:

window.onunload = function(){};

e.g.

<html><body>
<script type="text/javascript">
  window.onload = function() { alert('window.onload alert'); };
  window.onunload = function(){};
  alert('inline alert');
</script>
<a href="https://stackoverflow.com/questions/2638292/1.html">Click Me!</a>
</body></html>

Source:
http://www.firefoxanswer.com/firefox/672-firefoxanswer.html (Archived Version)

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