hidew3schools.user.js

// Moved to https://hg.sr.ht/~julfers/greasemonkey/browse/default/hidew3schools.user.js

// ==UserScript==
// @name        Hide W3 Schools
// @namespace   http://josiahulfers.com/hideW3schools
// @description Removes w3schools search results from DuckDuckGo
// @include     https://duckduckgo.com/*
// @version     3
// @grant       none
// @updateURL   https://hg.sr.ht/~julfers/greasemonkey/raw/default/hidew3schools.user.js
// ==/UserScript==
setInterval(function () { // interval because results load async
  var rs = document.getElementsByClassName('result')
  for (var ri = rs.length - 1; ri >= 0; ri--) {
    var as = rs[ri].getElementsByTagName('a')
    for (var ai = as.length - 1; ai >= 0; ai--) {
      if (/w3schools/.test(as[ai].hostname)) rs[ri].style.display = 'none'
    }
  }
}, 100)