User:Star0/User:Star0/Sandbox/1.js

window.onload = function() {
  (function() {
    const test1 = document.querySelector("#test1");
    test1.firstElementChild.firstElementChild.firstElementChild.src = "https://ice.frostsky.com/2024/09/20/185815f9e15db2942cbc0937eb8e19c9.png";
    console.log("src change");
  })();
};