Re: [w3c/IndexedDB] Adding examples for “versionchange” and “blocked”. (#133)

inexorabletash commented on this pull request.



> +other tabs, you should use the "versionchange" event to close the connection to
+the database.
+
+<pre class=lang-javascript>
+db.onversionchange = function() {
+  // First, save any unsaved data:
+  saveUnsavedData().then(function() {
+    // Now you need to close the database.
+    // If the document isn't being actively used, it may be appropriate to reload:
+    if (!document.hasFocus()) {
+      location.reload();
+      // Reloading will close the database, and also reload with the new JavaScript
+      // and database definitions.
+    } else {
+      // Alternatively you may close the database and display a message to the
+      // user. You need to ensure this isn't a disruptive user experience.

In reality, you want something more subtle and user friendly like Jake has, such as trying to transparently reload if possible and if not then pestering the user the minimal amount.

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