考试和问卷弹窗

public/coi-serviceworker.js

@@ -0,0 +1,93 @@
+/*! coi-serviceworker v0.1.6 - Guido Zuidhof, licensed under MIT */
+if (typeof window === 'undefined') {
+    self.addEventListener("install", () => self.skipWaiting());
+    self.addEventListener("activate", (event) => event.waitUntil(self.clients.claim()));
+
+    self.addEventListener("message", (ev) => {
+        if (ev.data && ev.data.type === "deregister") {
+            self.registration
+                .unregister()
+                .then(() => {
+                    return self.clients.matchAll();
+                })
+                .then(clients => {
+                    clients.forEach((client) => client.navigate(client.url));
+                });
+        }
+    });
+
+    self.addEventListener("fetch", function (event) {
+        if (event.request.cache === "only-if-cached" && event.request.mode !== "same-origin") {
+            return;
+        }
+
+        event.respondWith(
+            fetch(event.request)
+                .then((response) => {
+                    if (response.status === 0) {
+                        return response;
+                    }
+
+                    const newHeaders = new Headers(response.headers);
+                    newHeaders.set("Cross-Origin-Embedder-Policy", "require-corp");
+                    newHeaders.set("Cross-Origin-Opener-Policy", "same-origin");
+
+                    return new Response(response.body, {
+                        status: response.status,
+                        statusText: response.statusText,
+                        headers: newHeaders,
+                    });
+                })
+                .catch((e) => console.error(e))
+        );
+    });
+
+} else {
+    (() => {
+        // You can customize the behavior of this script through a global `coi` variable.
+        const coi = {
+            shouldRegister: () => true,
+            shouldDeregister: () => false,
+            doReload: () => window.location.reload(),
+            quiet: false,
+            ...window.coi
+        }
+
+        const n = navigator;
+        if (coi.shouldDeregister() && n.serviceWorker && n.serviceWorker.controller) {
+            n.serviceWorker.controller.postMessage({ type: "deregister" });
+        }
+
+        // If we're already coi: do nothing. Perhaps it's due to this script doing its job, or COOP/COEP are
+        // already set from the origin server. Also if the browser has no notion of crossOriginIsolated, just give up here.
+        if (window.crossOriginIsolated !== false || !coi.shouldRegister()) return;
+
+        if (!window.isSecureContext) {
+            !coi.quiet && console.log("COOP/COEP Service Worker not registered, a secure context is required.");
+            return;
+        }
+
+        // In some environments (e.g. Chrome incognito mode) this won't be available
+        if (n.serviceWorker) {
+            n.serviceWorker.register(window.document.currentScript.src).then(
+                (registration) => {
+                    !coi.quiet & console.log("COOP/COEP Service Worker registered", registration.scope);
+
+                    registration.addEventListener("updatefound", () => {
+                        !coi.quiet && console.log("Reloading page to make use of updated COOP/COEP Service Worker.");
+                        coi.doReload()
+                    });
+
+                    // If the registration is active, but it's not controlling the page
+                    if (registration.active && !n.serviceWorker.controller) {
+                        !coi.quiet && console.log("Reloading page to make use of COOP/COEP Service Worker.");
+                        coi.doReload()
+                    }
+                },
+                (err) => {
+                    !coi.quiet && console.error("COOP/COEP Service Worker failed to register:", err);
+                }
+            );
+        }
+    })();
+}

public/index.html

@@ -5,6 +5,8 @@
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=device-width,initial-scale=1.0">
     <link rel="icon" href="<%= BASE_URL %>favicon.ico">
+    <!-- <meta http-equiv="origin-trial" content="AuKHz2ifylDpZfg7iawfCDGtilbLT+tg9CCbVG4PNSxRA1v2NtYGRKAKctmE4Us42+t1lZ3IkPO9s5/VlHy/rwIAAABgeyJvcmlnaW4iOiJodHRwOi8vbG9jYWxob3N0OjMwMDAiLCJmZWF0dXJlIjoiVW5yZXN0cmljdGVkU2hhcmVkQXJyYXlCdWZmZXIiLCJleHBpcnkiOjE2NTg4Nzk5OTl9" /> -->
+    <script src="/coi-serviceworker.js"></script>
     <title><%= htmlWebpackPlugin.options.title %></title>
   </head>
   <body>