Google Chrome extension - how to turn JavaScript on/off?

Question

Is it possible to turn JavaScript on/off with a self-made Google Chrome extension?

For example, in Opera browser, there are simple possibilities t

Answer 1

Currently, we can NOT access chrome://settings/content data with your Chrome extension

In my code, when tab "chrome://settings/content" created, the alert(0) does NOT work, and always get the follow error:

Error during tabs.executeScript: Cannot access contents of url "chrome://settings/content". Extension manifest must request permission to access this host.

but when tab "http://www.google.com.hk" created, alert(0) works.

So I think we can NOT access chrome://settings/* data :

popup.html:

manifest.json:

{
  "name": "ImageSwitcher",
  "version": "1.0",
  "description": "Disable/Enable loading image",
  "browser_action": {
    "default_icon": "icon.png",
        "default_popup": "popup.html"
  },
  "permissions": [
    "tabs",
        "*://*/*"
  ]
}