xiaofei

这是一个脚本demo
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// ==UserScript==
// @name         xiaofei
// @namespace    http://tampermonkey.net/
// @version      1.5
// @description  这是一个脚本demo
// @author       xiaofei
// @license      GPL License
// @match        https://bbs.tampermonkey.net.cn/*
// @icon         https://www.google.com/s2/favicons?sz=64&domain=bilibili.com
// @grant        none
// ==/UserScript==

(function () {
  "use strict"; 

    let CityChangeOnce = false;
    let observer = new MutationObserver(mutations=>{
        console.log('MutationObserver:',mutations);
        switch(document.querySelector('#resideprovince').value){
            case '广东省':document.querySelector('#residecity').value = '广州市';break;
            case '山东省':document.querySelector('#residecity').value = '济南市';break;
            case '河南省':document.querySelector('#residecity').value = '开封市';break;
            default:CityChangeOnce=false;
          }
        
          if(CityChangeOnce===false&&document.querySelector('#residecity').value){
            
            document.querySelector('#residecity').onchange();
            CityChangeOnce = true;
          }
    })
    observer.observe(document.querySelector('#residedistrictbox'),{childList:true,addedNotes:true})
//aa
})();