Google Infogalactic

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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         Google Infogalactic
// @namespace    -
// @version      1.0
// @description  -
// @author       -
// @icon         https://google.com/favicon.ico
// @include      https://www.google.*/search?*
// @grant        GM.xmlHttpRequest
// ==/UserScript==

(() => {
    const box = document.querySelector('.kp-wholepage .kno-rdesc');
    if (!box) return;
    
    const heading = document.querySelector('.kp-wholepage span[role="heading"], .kp-wholepage h2')?.innerText;
    if (!heading) return;

    const url = 'https://infogalactic.com/info/Special:Search/' + heading;

    GM.xmlHttpRequest({
        url,
        method: 'GET',
        headers: {
            Origin: 'infogalactic.com'
        },
        onload: res => {
            if (res.status !== 200) return console.warn('Bad status from infogalactic:', res.status);
            let txt = res.responseText.replace(/<table[^<>]*>((.|\n)*?)<\/table>/g, '');
            let r = /id="mw-content-text"(?:.|\n)*?<p>((.|\n)*?)<\/p>/g.exec(txt);
            if (!r) return console.warn('Infogalactic returned a bad body, or no matching articles were found');
            let regex = /<p>((?:.|\n)*?)<\/p>/g;
            txt = res.responseText.substring(r.index);
            while (r && r[1].length < 10) {
                r = regex.exec(txt);
            }
            if (!r) return console.warn('Infogalactic returned a bad body, or no matching articles were found');
            const el = document.createElement('div');
            el.innerHTML = r[1];
            [...el.querySelectorAll('sup')].forEach(ref => ref.remove());
            box.innerHTML = `<span>${el.innerText}</span><span> </span><a href="${url}">Infogalactic</a>`;
        },
        onerror: console.warn
    });
})();