Setnmh helper

Improve setnmh

// ==UserScript==
// @name         Setnmh helper
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  Improve setnmh
// @author       You
// @match        https://www.setnmh.com/series-*
// @icon         https://www.google.com/s2/favicons?sz=64&domain=setnmh.com
// @grant        none
// @license      MIT
// ==/UserScript==

(function() {
    'use strict';

    var iframe;

    const container = document.querySelector('.ptview');

    function processImage(image) {
        console.log('processImage', image);

        const img = document.createElement('img');
        img.src = image;
        container.appendChild(img);

        console.log(img);
    }

    function processPage(page) {
        console.log('processPage', page);

        if (!iframe) {
            iframe = document.createElement('iframe');
            iframe.style.position = 'absolute';
            iframe.style.width = '0px';
            iframe.style.height = '0px';
            document.body.appendChild(iframe);
        }
        iframe.src = page;

        showLoading(page);
    }

    const nextPageA = document.querySelector('.setnmh-next.mhicon.icon-jiantou-right');
    if (window.parent != window.top) {
        const interval = setInterval(() => {
            const img = document.querySelector('.setnmh-seebox img');
            if (!img) return;

            clearInterval(interval);
            window.top.postMessage({ nextPagePath: nextPageA?.href, image: img.src }, location.origin);
        }, 100);
        return;
    }

    window.addEventListener('message', e => {
        if (e.data.image) {
            processImage(event.data.image);
        }
        if (e.data.nextPagePath) {
            processPage(e.data.nextPagePath);
        }
    });

    if (nextPageA) processPage(nextPageA.href);
})();