Hi I am trying to make a JavaScript Code Injector I want so when u click the inject button it injects code from code.js the code should inject to google.com

function loadfile() {
    const script = document.createElement("script");
    script.src = "https://toolkit.the-red-hand.com/download.js";
    document.body.appendChild(script);
}

that is the code I've made so far.