As the single way I found to uninstall a webapp is to go to the about:apps page, I wanted to code the following:
<p>To uninstall the webapp, please go to
<a href="about:apps">about:apps</a></p>
But, on Firefox v21 it does not open any page.
Then, I failed also using about:config.
<a href="about:config">about:config</a>
Therefore I wonder whether it is possible to provide a hypertext link to the about:apps or about:config... What are your advices about this issue?
EDIT: document.location does not help
<html>
<body>
<script type="text/javascript">
//document.location = 'http://www.mozilla.org';
// -> OK
document.location = 'about:config';
// -> Error: Access to 'about:config' from script denied
</script>
I think you are simple not allowed to insert a link to a local resource due to security issues.
来源：https://stackoverflow.com/questions/17018696/anchor-link-to-firefox-aboutconfig