Condole

condole!

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         Condole
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  condole!
// @author       AnCoSONG
// @include      *
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    let html = document.querySelector('html')
    function transitionToGray(dom){

        const transitionConfig = "filter 0.5s linear"
        dom.style.transition = transitionConfig
        dom.style.webkitTransition = transitionConfig
        dom.style['-moz-transition'] = transitionConfig
        dom.style['-o-transition'] = transitionConfig
        dom.style['-ms-transition'] = transitionConfig
    }

    function grayScalify(dom, level=1){
        const grayscale = `grayscale(${level})`
        dom.style.filter = grayscale
        dom.style.webkitFilter = grayscale
        dom.style['-moz-filter'] = grayscale
        dom.style['-o-filter'] = grayscale
        dom.style['-ms-filter'] = grayscale
    }
    transitionToGray(html);
    grayScalify(html);
})();