GitHub Repo Share-to-Twitter Button

Add a Twitter share button to repository page

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 or Violentmonkey 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         GitHub Repo Share-to-Twitter Button
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  Add a Twitter share button to repository page
// @author       eggplants
// @homepage     https://github.com/eggplants
// @match        https://github.com/*/*
// @grant        none
// @license      MIT
// ==/UserScript==

(window.onload = function() {
    "use strict";

    const description = document.title;
    const pg_link = location.href;

    var a = document.getElementsByClassName('pagehead-actions flex-shrink-0 d-none d-md-inline')[0];
    var b = document.createElement('a');
    b.className = 'btn btn-sm';
    b.setAttribute('target', '_blank');
    b.href = 'http://twitter.com/share?text="' + description + '"%0a%0a' + pg_link;
    b.textContent = 'Share to Twitter';

    var c = document.createElement('li');
    c.appendChild(b);

    a.insertBefore(c, document.getElementsByClassName('pagehead-actions flex-shrink-0 d-none d-md-inline')[0].children[0]);
}());