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Duckduckgo - Quick bang

Skip one unnecessary page load and inmediately go to the bang search result on Enter

  1. // ==UserScript==
  2. // @name         Duckduckgo - Quick bang
  3. // @namespace    https://openuserjs.org/users/cuzi
  4. // @description  Skip one unnecessary page load and inmediately go to the bang search result on Enter  
  5. // @license      MIT
  6. // @copyright    2017, cuzi (https://openuserjs.org/users/cuzi)
  7. // @version      2
  8. // @include      https://duckduckgo.com/*
  9. // @include      https://start.duckduckgo.com/*
  10. // @grant        none
  11. // ==/UserScript==
  12.  
  13. // ==OpenUserJS==
  14. // @author       cuzi
  15. // ==/OpenUserJS==
  16.  
  17. "use strict";
  18.  
  19. const bangUrl = "https://duckduckgo.com/bang.js";
  20. var input;
  21.  
  22. function load(s) {
  23.   var req = new XMLHttpRequest();
  24.   req.responseType = "json";
  25.   req.open("GET", bangUrl, true);
  26.   req.onload = function () {
  27.     let arr = req.response;
  28.     for (let i = 0; i < arr.length; i++) {
  29.       localStorage.setItem(arr[i]["t"], arr[i]["u"]);
  30.     }
  31.     bang(s);
  32.   };
  33.   req.send(null);
  34. }
  35.  
  36. function bang(s) {
  37.   try {
  38.     if (!localStorage.getItem("g")) {
  39.       return load(s);
  40.     }
  41.     let m = s.match(/(.*)\!(\w+)(\s*.*)/);
  42.     let t = m[2];
  43.     let q = encodeURIComponent(m[1] + m[3]);
  44.     let u = localStorage.getItem(t);
  45.     document.location.replace(u.replace("{{{s}}}", q));
  46.   }
  47.   catch (e) {
  48.     document.querySelector("input[type=submit]").click();
  49.   }
  50. }
  51.  
  52. function onsubmit(ev) {
  53.   if (input.value.indexOf("!") !== -1) {
  54.     bang(input.value);
  55.   } else {
  56.     document.querySelector("input[type=submit]").click();
  57.   }
  58. }
  59.  
  60. (function () {
  61.   input = document.querySelector("input[name=q]");
  62.   if (input) {
  63.     input.addEventListener("keydown", function (ev) {
  64.       if (ev.keyCode === 13) {
  65.         ev.preventDefault();
  66.         return onsubmit.call(this, ev);
  67.       }
  68.     });
  69.   }
  70. })();