Chrome Extension Error With 'oncommand'

I'm getting the error 'Uncaught TypeError: Cannot read property 'onCommand' of undefined' while running a Chrome Extension with the following content: manifest.json: { 'name': '

Solution 1:

The chrome.commands is not available by content_scripts (as defined in https://developer.chrome.com/extensions/content_scripts).

To get it working you can change your manifest to :

{
  "name": "Test",
  "description": "Key command test.",
  "version": "1.0",
  "manifest_version": 2,
  "permissions": [
    "<all_urls>"
  ],
  "background":
    {
    "scripts": ["background_test.js"],
    "persistent": true
    },

  "commands": {
    "Ctrl+M": {
      "suggested_key": {
        "default": "Ctrl+M",
        "mac": "Command+M"
      },
      "description": "Ctrl+M."
    },
    "Ctrl+L": {
      "suggested_key": {
        "default": "Ctrl+L",
        "mac": "Command+L"
      },
      "description": "Ctrl+L"
    }
  }
}

In addition Ctlr+L is not working (at least on Mac) as already used by chrome to get focus on adress bar.

The element will be visible in the console of the extension. To see it open chrome://extensions/ and click on the Inspect views: background page of your extension.