Select box filter

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Select box filter",
  "version": "1.1.5",
  "manifest_version": 3,
  "description": "select boxをCtrl+Click（Command+Click）するとフィルタモードになり、隣に入力欄が出現します。出現した入力欄にフィルタしたいキーワードを入力すると選択肢がフィルタされます。",
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*",
        "file://*/*"
      ],
      "js": [
        "selectbox-filter.js"
      ]
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "icons/icon16.png"
      ],
      "matches": [
        "http://*/*",
        "https://*/*",
        "file://*/*"
      ]
    }
  ],
  "host_permissions": [
    "http://*/*",
    "https://*/*",
    "file://*/*"
  ]
}