Chrome JS & CSS Highlighter

Highlight's CSS and JS code in tab

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         Chrome JS & CSS Highlighter
// @version      1.0
// @description  Highlight's CSS and JS code in tab
// @author       satanch
// @match        *://*/*
// @require      https://cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/highlight.min.js
// @require      https://cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/languages/css.min.js
// @require      https://cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/languages/javascript.min.js
// @grant        none
// @namespace https://greasyfork.org/users/119240
// ==/UserScript==

(function() {
    'use strict';

    if (window.location.pathname.substr(-3, 3) !== '.js' && window.location.pathname.substr(-4, 4) !== '.css')
        return false;

    const style = document.createElement('style');
    style.innerHTML = '.hljs{display:block;overflow-x:auto;padding:0.5em;background:white;color:black}.hljs-comment,.hljs-quote{color:#800}.hljs-keyword,.hljs-selector-tag,.hljs-section,.hljs-title,.hljs-name{color:#008}.hljs-variable,.hljs-template-variable{color:#660}.hljs-string,.hljs-selector-attr,.hljs-selector-pseudo,.hljs-regexp{color:#080}.hljs-literal,.hljs-symbol,.hljs-bullet,.hljs-meta,.hljs-number,.hljs-link{color:#066}.hljs-title,.hljs-doctag,.hljs-type,.hljs-attr,.hljs-built_in,.hljs-builtin-name,.hljs-params{color:#606}.hljs-attribute,.hljs-subst{color:#000}.hljs-formula{background-color:#eee;font-style:italic}.hljs-selector-id,.hljs-selector-class{color:#9b703f}.hljs-addition{background-color:#baeeba}.hljs-deletion{background-color:#ffc8bd}.hljs-doctag,.hljs-strong{font-weight:bold}.hljs-emphasis{font-style:italic}';
    document.querySelector('head').appendChild(style);

    document.body.style.margin = 0;
    const source = document.querySelector('pre');
    hljs.highlightBlock(source);
})();