Double Click

Double Click to Lookup in Online Dictionary

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install a user script manager extension to install this script.

(I already have a user script manager, let me install it!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name         Double Click
// @namespace    derjoker
// @version      0.1.3
// @description  Double Click to Lookup in Online Dictionary
// @author       Feng Ya
// @match        *://*/*
// @grant        none
// ==/UserScript==

;(function () {
  'use strict'

  // Your code here...
  console.log('Double Click v' + GM_info.script.version)

  const engines = {
    en: 'https://www.merriam-webster.com/dictionary/',
    de: 'https://www.duden.de/suchen/dudenonline/'
  }

  const htmlLang = document.querySelector('html').lang.slice(0, 2)

  window.addEventListener('dblclick', event => {
    console.log(event.path)
    console.log(event.path.map(node => node.lang))
    const langs = event.path.map(node => node.lang)
      .filter(lang => Boolean(lang))
      .map(lang => lang.slice(0, 2))
    const lang = htmlLang === 'en' ? langs[0] : htmlLang
    const engine = engines[lang] || engines.en

    const selection =
      window.getSelection() ||
      document.getSelection() ||
      document.selection.createRange()
    const link = engine + selection
    console.log(link)
    window.open(link)
  })
})()