jsReloader.js

window.addEventListener("error", e => {
    const tag = e.target
    if (tag.tagName === 'SCRIPT' && !(e instanceof ErrorEvent)) {
        console.log("JS 加载错误")
        const url=new URL(tag.src)
        document.write(`<script src="${url.toString()}">\<\/script>`);
    }
}, true);