Prototyping 12 November 2012

Javascript in other contexts: Greasemonkey

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Creating new content on the page...

 var newdiv = document.createElement('div');
 document.body.appendChild(newdiv)

Removing stuff is slightly indirect as you have to ask the element's "parent" to remove it's "child":

 var delme = document.getElementById("ads");
 delme.parentNode.removeChild(delme);

Continued on... http://commons.oreilly.com/wiki/index.php/Greasemonkey_Hacks/Getting_Started#Add_or_Remove_Content_on_a_Page