GlobalEventHandlers.oncuechange
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
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oncuechange 属性属于 GlobalEventHandlers，是一个处理 cuechange 事件的事件处理器。当TextTrack更改了当前显示的提示时，cuechange 事件将会触发。
语法
js
element.oncuechange = handlerFunction;
var handlerFunction = element.oncuechange;
handlerFunction 可以为 null，也可以是一个处理指定事件的JavaScript 函数。
规范
| Specification |
|---|
| HTML Standard # event-media-cuechange |
| HTML Standard # handler-texttrack-oncuechange |
浏览器兼容性
BCD tables only load in the browser