Actually, you don’t have to wait. You can process right away in Content Scripts. Just make sure you don’t use document_start
in the run_at
attribute.
In document_end
, the files are injected immediately after the DOM is complete, but before subresources like images and frames have loaded. document_idle
(the default value) happens even later.
{
"name": "My extension",
...
"content_scripts": [
{
"matches": ["http://www.google.com/*"],
"css": ["mystyles.css"],
"js": ["jquery.js", "myscript.js"],
"run_at": "document_end"
}
],
...
}