Examine source code of BLJPwdAuto

{
  "name": "BLJPwdAuto",
  "version": "1.1",
  "description": "BaoLeiJi auto fill password to the html input field and auto submit",
  "permissions": [
    "http://*/*",
    "activeTab",
    "declarativeContent",
    "storage"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://*/*",
        "http://*/*"
      ],
      "run_at": "document_idle",
      "js": [
        "jquery-3.5.1.min.js",
        "jquery.base64.js",
        "contentScript.js"
      ]
    }
  ],
  "manifest_version": 2
}