79 lines
No EOL
2.8 KiB
JavaScript
79 lines
No EOL
2.8 KiB
JavaScript
'use strict';
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const checkCacheFunction = () => {
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if ('applicationCache' in window) {
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try {
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var webappCache = window.applicationCache;
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const loaded = () => {
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//var h1El = document.querySelector("h1");
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var connectionStatus = ((navigator.onLine) ? 'online' : 'offline');
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//h1El.textContent = h1El.textContent + " - currently: " + connectionStatus;
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switch(webappCache.status)
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{
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case 0:
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console.log("Cache status: Uncached.");
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break;
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case 1:
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console.log("Cache status: Idle.");
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break;
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case 2:
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console.log("Cache status: Checking.");
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break;
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case 3:
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console.log("Cache status: Downloading.");
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break;
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case 4:
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console.log("Cache status: Update ready.");
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break;
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case 5:
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console.log("Cache status: Obsolete.");
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break;
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}
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};
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const updateCache = () => {
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webappCache.swapCache();
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console.log("Cache has been updated due to a change found in the manifest.");
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};
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const errorCache = () => {
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console.log("You're either offline or something has gone horribly wrong.");
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};
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window.addEventListener("load", loaded, false);
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webappCache.addEventListener("updateready", updateCache, false);
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webappCache.addEventListener("error", errorCache, false);
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} catch (error) {
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console.error(`Cache check failed with ${error}.`);
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}
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} else {
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console.warn("Application caches are not supported!");
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}
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};
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const registerServiceWorker = async () => {
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if ('serviceWorker' in navigator) {
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try {
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const registration = await navigator.serviceWorker.register(
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'sw.js',
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{
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scope: './',
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}
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);
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if (registration.installing) {
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console.log('Service worker installing.');
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} else if (registration.waiting) {
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console.log('Service worker installed.');
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} else if (registration.active) {
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console.log('Service worker active.');
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}
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} catch (error) {
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console.error(`Registration failed with ${error}.`);
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}
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} else {
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console.warn("Service workers are not supported!");
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}
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};
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checkCacheFunction();
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registerServiceWorker(); |