Simple and LagFree Zoom

For those who don't wanna use any other features mod except zoom.

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         Simple and LagFree Zoom
// @namespace    AeonGV
// @version      1.1
// @description  For those who don't wanna use any other features mod except zoom.
// @author       AeonGV
// @match        http://slither.io/
// @include      http://www.slither-io.com/slitherio
// @run-at       document-body
// @grant        none
// ==/UserScript==

function zoom(e) {
    if (!window.gsc) {
        return;
    }
    e.preventDefault();
    gsc *= Math.pow(0.93, e.wheelDelta / -120 || e.detail / 2 || 0);
    gsc > 2 ? gsc = 2 : gsc < 0.2 ? gsc = 0.2 : null;
}


if (/firefox/i.test(navigator.userAgent)) {
        document.addEventListener("DOMMouseScroll", zoom, false);
    } else {
        document.body.onmousewheel = zoom;
    }