angularjs - 在angular.js应用程序中注册服务 worker

Question

我正在使用ionic和angular.js创建一个应用程序，并且在注册服务人员时遇到了困难，我打算使用该服务人员来添加新的应用程序安装横幅功能。我正在按照指示将以下代码添加到我的app.js文件中，但我注意到收到了注册发生的任何信号或任何错误。

这是我要添加到我的app.js中的代码:

if ('serviceWorker' in navigator) {
  navigator.serviceWorker.register('service-worker.js').then(function(registration) {
    //Registration was successful
    console.log('ServiceWorker registration successful with scope: ', registration.scope);
  }).catch(function(err) {
    //registration failed :(
    console.log('ServiceWorker registration failed: ', err);
  });
}

Answer 1

确保您以localhost加载页面，或者必须使用https

You’ll also need to serve your code via HTTPS — Service Workers are restricted to running across HTTPS for security reasons. GitHub is therefore a good place to host experiments, as it supports HTTPS.

https://developer.mozilla.org/en-US/docs/Web/API/ServiceWorker_API/Using_Service_Workers

检查您的浏览器是否支持此功能。

if ('serviceWorker' in navigator) {
  [...]
} else {
  console.log("this browser does NOT support service worker");
}

这可能会有所帮助: http://caniuse.com/#feat=serviceworkers

如果要查看服务人员的当前状态，可以执行以下操作:

navigator.serviceWorker.register('/serviceworker.js', {scope: '/'})
  .then(function (registration) {
    var serviceWorker;
    if (registration.installing) {
      serviceWorker = registration.installing;
    } else if (registration.waiting) {
      serviceWorker = registration.waiting;
    } else if (registration.active) {
      serviceWorker = registration.active;
    }

    if (serviceWorker) {
      console.log("ServiceWorker phase:", serviceWorker.state);

      serviceWorker.addEventListener('statechange', function (e) {
        console.log("ServiceWorker phase:", e.target.state);
      });
    }
  }).catch(function (err) {
    console.log('ServiceWorker registration failed: ', err);
  });