Добавить jQuery в расширение
{
"name": "MyExtension",
"version": "0.1",
"description": "blah blah",
"background_page": "background.html",
"content_scripts": [
{
"matches": ["http://*/*","https://*/*"],
"css": ["extension.css"],
"js": ["jquery-1.4.2.js", "extension.js"]
}
]
}
Disgusted Dove