javascript - How to change CSS-Style with Greasemonkey? - Stack Overflow

I'm trying to write a small script for Greasemonkey, but it does not work, because I have little experience.

It is necessary to replace all properties CSS with a value (background: #fff;) on (background: #e8e8e8;).

I'm trying to write a small script for Greasemonkey, but it does not work, because I have little experience.

It is necessary to replace all properties CSS with a value (background: #fff;) on (background: #e8e8e8;).

• javascript
• css
• greasemonkey

Share Improve this question Follow edited Aug 31, 2017 at 16:06 Vova Dima asked Aug 31, 2017 at 11:14 Vova DimaVova Dima 1111 silver badge22 bronze badges 1

• 2 To change CSS you use Stylish instead. – user5734311 Commented Aug 31, 2017 at 11:16

Add a ment  | 

2 Answers 2

Sorted by: Reset to default 4

// ==UserScript==
// @name        Background color change
// @namespace   https://website here
// @description Changes the background color
// @version     1
// @grant       none
// ==/UserScript==

document.body.style.background = "white";

Simply add,

GM_addStyle("body { background-color: #fff !
    important; }");

Important may not be needed.