Replace Full width bang to half width

Replace Full width bang! to half width!

K instalaci tototo skriptu si budete muset nainstalovat rozšíření jako Tampermonkey, Greasemonkey nebo Violentmonkey.

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

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Violentmonkey.

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Userscripts.

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

K instalaci tohoto skriptu si budete muset nainstalovat manažer uživatelských skriptů.

(Už mám manažer uživatelských skriptů, nechte mě ho nainstalovat!)

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.

(Už mám manažer uživatelských stylů, nechte mě ho nainstalovat!)

// ==UserScript==
// @name    Replace Full width bang to half width
// @name:zh-CN   替换全角!到半角!
// @namespace https://github.com/fengkx/
// @match     https://duckduckgo.com/*
// @match     https://start.duckduckgo.com/*
// @version 0.1
// @description       Replace Full width bang! to half width!
// @description:en    Replace Full width bang! to half width!
// @description:zh    替换全角bang!到半角bang!
// @description:zh-CN 替换全角bang!到半角bang!
// @grant none
//@run-at             document-end
// ==/UserScript==

var $input = document.getElementById('search_form_input_homepage') || document.getElementById('search_form_input') ;
$input && $input.addEventListener('input', function (e) {
    if($input.value.search(/^!/) === 0) {
      var start = $input.selectionStart;
      var end = $input.selectionEnd;
      this.value = this.value.replace(/^!/, '!');
      $input.selectionStart=start;
      $input.selectionEnd=end;
    }
	
})