MDL-56095 output: Properly set prototype on custom event for IE

2016-10-12 13:10:30 +08:00
parent bc8a896208
commit 00d3a8c5f4
1 changed files with 2 additions and 1 deletions
@@ -1322,8 +1322,9 @@ function updateProgressBar(id, percent, msg, estimate) {
        if (!(exception instanceof TypeError)) {
            throw exception;
        }
-        event = document.createEvent('Event');
+        event = document.createEvent('CustomEvent');
        event.initCustomEvent('update', false, true, eventData);
+        event.prototype = window.Event.prototype;
    }

    el.dispatchEvent(event);