Is it possible to use JavaScript to change the meta-tags of the page?

Question

If I put a div in the head and display:none, than use JavaScript to display it, will this work?

Edit:

I have stuff loaded in AJAX. And as my AJAX changes the

Answer 1

Yes, you can do that.

There are some interesting use cases: Some browsers and plugins parse meta elements and change their behavior for different values.

Examples

Skype: Switch off phone number parser

iPhone: Switch off phone number parser

Google Chrome Frame

Viewport definition for mobile devices

This one can be changed by JavaScript. See: A fix for iPhone viewport scale bug

Meta description

Some user agents (Opera for example) use the description for bookmarks. You can add personalized content here. Example:

Change description

So, it’s not just about search engines.