店小秘统计当前订单件数

自己用着方便，看谁也有这需求就凑合用吧!
目前为 2023-03-25 提交的版本。查看最新版本。
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// ==UserScript==
// @name         店小秘统计当前订单件数
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  自己用着方便，看谁也有这需求就凑合用吧!
// @author       Huang
// @match        https://www.dianxiaomi.com/order/*
// @icon         https://www.google.com/s2/favicons?sz=64&domain=dianxiaomi.com
// @grant        none
// @license MIT
// ==/UserScript==

(function() {
    'use strict';

    // Your code here...
    function main(){
        var tbody = document.querySelector(".xianshishujudate");
        var trs = tbody.children;
        var itemList=[];

        for (var i = 0; i < trs.length; i++) {
            if (trs[i].tagName === "TR") {
                itemList.push(trs[i])
            }
        }

        itemList.forEach((v,i)=>{
            if(i%2 == 0)return;

            let curNum = 0;
            var numberBox = v.querySelectorAll(".p0-imp .pairProInfo");
            numberBox.forEach(item=>{

                const secondTd = item.querySelector("td:nth-of-type(2)");
                const span = secondTd.querySelector("p:first-of-type span");
                curNum+=Number(span.innerText)
                v.setAttribute('cur-total',curNum);
            })
        })

        itemList.forEach((v,i)=>{
            if(i%2 != 0)return;

            v.style.position="relative";
            var newElement = document.createElement("h3");
            var num = itemList[i+1].getAttribute('cur-total');

            newElement.textContent = `${num}件`

            newElement.style.position="absolute";
            newElement.style.left="200px";
            newElement.style.top="8px";
            newElement.style.color = "red";
            newElement.style.fontSize = "12px";
            v.appendChild(newElement);
        })
    }

    function waitForElement() {
        var target = document.querySelector(".xianshishujudate");
        if (!target) return;

        observer.disconnect();
        main();
    }

    var observer = new MutationObserver(waitForElement);
    observer.observe(document.body, { childList: true, subtree: true });

    window.addEventListener("load", waitForElement);
})();