Exhentai Preview Image

main.js

// ==UserScript==
// @name         Exhentai Preview Image
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  try to take over the world!
// @author       You
// @match        https://exhentai.org/*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';
    const items = document.querySelectorAll('tr')
    items.forEach(el => {
        const div = el.querySelector('.gl3c')
        if (!div) {
            return
        }
        const img = el.querySelector('.glthumb img')
        const text = el.querySelector('.glthumb').innerHTML

        let newImg
        if (img) {
            newImg = img.cloneNode()
        } else {
            const src = '/' + text.split('~')[2]
            newImg = document.createElement('img')
            newImg.src = src
        }
        if (newImg.src.startsWith('data')) {
            newImg.src = newImg.dataset.src
        }
        div.insertBefore(newImg, div.childNodes[0])
        div.style = 'height: auto;'
        const link = el.querySelector('.gl3c a')
        link.removeAttribute('onmouseover')
        link.setAttribute("target", "_blank");
        div.removeAttribute('onmouseover')
    })
})();