The oncuechange property of the GlobalEventHandlers mixin is the event handler for processing cuechange events. 
 The cuechange event fires when a TextTrack has changed the currently displaying cues. The event is sent to both the TextTrack and to the <track> element the track is being presented by, if any; in the latter case, its handler is on an HTMLTrackElement object. 
element.oncuechange = handlerFunction; var handlerFunction = element.oncuechange;
 handlerFunction is either null or a JavaScript function specifying the handler for the event. 
| Specification | 
|---|
| HTML Standard (HTML) # handler-oncuechange  | 
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
oncuechange | 
32  | 
18  | 
 68 
Added for the  
<track> element (HTMLTrackElement) in Firefox 68.31 
Added for the  
TextTrack interface in Firefox 31. | 
No  | 
 19 
≤12.1-15 
 | 
10.1  | 
4.4.3  | 
32  | 
 68 
Added for the  
<track> element (HTMLTrackElement) in Firefox 68.31 
Added for the  
TextTrack interface in Firefox 31. | 
 19 
≤12.1-14 
 | 
10.3  | 
2.0  | 
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    https://developer.mozilla.org/en-US/docs/Web/API/GlobalEventHandlers/oncuechange