| <!DOCTYPE html> |
| <html> |
| |
| <head> |
| <title> Service worker test </title> |
| </head> |
| |
| <body> |
| <h1>Service worker test</h1> |
| <section></section> |
| <script> |
| const serviceWorker = navigator.serviceWorker; |
| serviceWorker.register('/testdata/service_worker.js').then(function (registration) { |
| console.log("success!"); |
| if (registration.installing) { |
| console.log('Howdy from your installing page.'); |
| } else if (registration.active) { |
| console.log('Service worker is active now.'); |
| } |
| }, err => { |
| console.error("Installing the worker failed!", err); |
| }); |
| |
| function imgLoad(url) { |
| // return a promise for an image loading |
| return new Promise(function (resolve, reject) { |
| var request = new XMLHttpRequest(); |
| request.open('GET', url); |
| request.responseType = 'blob'; |
| |
| request.onload = function () { |
| if (request.status == 200) { |
| resolve(request.response); |
| } else { |
| reject(Error('Failed to load the image: ' + request.statusText)); |
| } |
| }; |
| // Send the request |
| request.send(); |
| }); |
| } |
| |
| window.onload = function () { |
| imgLoad("google_logo.png").then(function (response) { |
| var myImage = document.createElement('img'); |
| myImage.src = window.URL.createObjectURL(response); |
| document.querySelector('section').appendChild(myImage); |
| }, function (Error) { |
| console.log(Error); |
| }); |
| } |
| |
| </script> |
| </body> |
| |
| </html> |
