Tampermonkey Compatible Reddit NSFW Sub Redirector

Reddit - Block NSFW.js

// ==UserScript==
// @name		Reddit - Block NSFW
// @description Redirects NSFW subreddits to another site.
// @version		1.0
// @include		/^https?://.*\.reddit\.com/r/.*$/
// @license		GPLv3
// @grant		GM_xmlhttpRequest
// @namespace   https://github.com/Markyparky56
// ==/UserScript==

var redirectUrl = "https://www.reddit.com";	// Set this to the url you want to redirect to.

var url = document.URL;

if (url.substring(url.length-1) != "/")
{
	url = url + "/";
}

var jsonUrl = url + "about.json";

GM_xmlhttpRequest(
    {
        method: "GET",
        url: jsonUrl,
        synchronous: true,
        onload:     
        function OnGet(result)
        {
            var json = JSON.parse(result.responseText);
            if(json.data.over18)
            {
                window.location.replace(redirectUrl);
            }
        }
    });