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2048核基地列表显示预览图，只对 bbs.klnkn.com 域名有效
// ==UserScript==
// @name 2048核基地列表显示预览图
// @namespace http://tampermonkey.net/
// @version 0.0.1
// @description 2048核基地列表显示预览图，只对 bbs.klnkn.com 域名有效
// @author meteora
// @match https://bbs.klnkn.com/2048/*
// @icon https://www.google.com/s2/favicons?sz=64&domain=klnkn.com
// @grant none
// @license MIT
// ==/UserScript==
;(() => {
const domList = document.querySelectorAll(
"#ajaxtable > tbody:nth-child(2) > tr"
)
if (!domList) return
for (const item of domList) {
//获取元素里面的预览图片的地址
const aDom = item.querySelector("td:nth-child(2) > a")
if (!aDom) continue // 防止页面没有链接
const pageUrl = aDom.href
if (!pageUrl) continue // 防止页面没有链接
fetch(pageUrl).then(async (res) => {
let appendDom = ""
const responseText = await res.text()
//通过响应的网页代码构造出一颗dom树以选取里面的元素，以元素里面的图片地址
const dom = document.createElement("div")
dom.innerHTML = responseText
const imgDomList = dom.querySelectorAll(
"img.preview-img"
)
if (!imgDomList || imgDomList.length === 0) return
//只取前面2张
for (let i = 0; i < 2; i++) {
if (!imgDomList[i]) break // 防止数组越界
const imgDomListElement = imgDomList[i];
const imageSrc = imgDomListElement.getAttribute("src");
appendDom += `<img src="${imageSrc}" style="height: auto; max-height: 250px; display: inline-block; margin-right: 5px" alt="" loading="lazy"/>`;
}
//在下面插入一个元素
const newElement = document.createElement("tr")
const newElementInside = document.createElement("td")
newElementInside.setAttribute("colspan", "5")
newElementInside.innerHTML = appendDom
newElement.appendChild(newElementInside)
item.insertAdjacentElement("afterend", newElement)
})
}
})()