Chrome Extension: DOM traversal

Question

I want to write a Chrome extension that looks at the HTML of the page its on, and if it finds eg

then it will output, as a HTML list in the

Answer 1

Unless the problem is more complex than I think, why not just use jQuery or other convenient js api for this? This is what they were made for - to traverse the dom easily. You can inject jquery and your script that will be using it into required pages in manifest:

"content_scripts": [ {
    "js": [ "jquery.js", "script.js" ],
    "matches": [ "http://*/*", "https://*/*" ]
}]