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magiamgia.js

// ==UserScript==
// @include     http://*
// @include     https://*
// @run-at      document-end
// ==/UserScript==

if (window.location.host === 'bloggiamgia.vn') {
  unsafeWindow.open = function () { }

  document.querySelectorAll('.polyxgo_get_coupon').forEach(element => {
    if (element.classList.contains('polyxgo_no_coupons')) return

    var REGEX = /prompt\('.+?', '(.*?)'\)/;
    var TEXT = element.querySelector('.btn-your-voucher-code').getAttribute('onclick');
    var COUPON_CODE = TEXT.match(REGEX)[1]

    element.querySelector('.coupon-button').textContent = COUPON_CODE
    element.querySelector('.code-coupon').remove()
  })
}

if (window.location.host === 'mgg.vn') {
  unsafeWindow.open = function () { }

  document.querySelectorAll('.get-code').forEach(element => {
    element.remove()
  })
}

if (window.location.host === 'chanhtuoi.com') {
  unsafeWindow.open = function () { }

  document.querySelectorAll('.cs-btn-coupon').forEach(element => {
    element.querySelector('.ec-text').remove()
  })
}

if (window.location.host === 'hieuvoz.com') {
  unsafeWindow.open = function () { }

  document.querySelectorAll('.su-button').forEach(element => {
    var TEXT = element.getAttribute('onclick'); 
    if (typeof TEXT != 'string') return
    if (TEXT === null) return
    if (TEXT === '') return

    var REGEX = /prompt\('.+?','(.*?)'\)/;
    var match = TEXT.match(REGEX)
    if (! match) return;

    var COUPON_CODE = match[1]
    element.querySelector('span').textContent = COUPON_CODE
  })
}