小编f.c*_*f.c的帖子

我正在创建一个渐进式Web应用程序（pwa），并尝试注册服务工作者以测试脱机功能。文件夹结构如下：

-- views 
   -- index.pug
-- sw.js
-- public
   -- js
      -- main.js
-- index.js

index.js文件是服务器文件，main.js是每个.pug文件中链接的文件。我嵌入了服务人员注册代码，代码如下

if ('serviceWorker' in navigator) {
    window.addEventListener('load', function() {
        navigator.serviceWorker.register('./sw.js').then(function(registration) {
            // Registration was successful
            console.log('Service Worker registration successful with scope: ', registration.scope);

            // console.log('Service Worker registration successful with scope: ', registration.scope);
        }, function(err) {
            // registration failed :(
            console.log('ServiceWorker registration failed: ', err);
        });
    });
}

404错误始终在本地主机中弹出，并且我不知道为什么会部署该URL，如何解决呢？

ServiceWorker registration failed:  TypeError: Failed to register a ServiceWorker: A bad HTTP response code (404) was received …