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JavaScript & HTML DOM Reference Manual

Overview

JavaScript Object

JavaScript Array Object JavaScript Boolean Object JavaScript Date Object JavaScript Math Object JavaScript Number Object JavaScript String Object JavaScript RegExp Object JavaScript Global properties / functions JavaScript Operator

Browser Object

Window Object Navigator Object Screen Object History Object Location Object

DOM Object

HTML DOM Document Object HTML DOM Element object HTML DOM Attribute object HTML DOM Event object

HTML Object

<a> <area> <audio> <base> <blockquote> <body> <button> <canvas> <col> <colgroup> <datalist> <del> <details> <dialog> <embed> <fieldset> <form> <iframe> <frameset > <img> <ins> <input> - button <input> - checkbox <input> - color <input> - date <input> - datetime <input> - datetime-local <input> - email <input> - file <input> - hidden <input> - image <input> - month <input> - number <input> - range <input> - password <input> - radio <input> - reset <input> - search <input> - submit <input> - text <input> - time <input> - url <input> - week <keygen> <link> <label> <legend> <li> <map> <menu> <menuItem> <meta> <meter> <object> <ol> <optgroup> <option> <param> <progress> <q> <script> <select> <source> <style> <table> <td> <th> <tr> <textarea> <title> <time> <track> <video>

HTML DOM Audio playbackRate property

Previous: HTML DOM Audio muted property

Next: HTML DOM Audio duration property

Examples

The audio is set to slow:

document.getElementById("myAudio").playbackRate = 0.5;

Definition and Usage

playbackRate property sets or returns the current audio playback speed.

Browser Support

All major browsers support playbackRate property.

Note: Internet Explorer 9 and earlier versions do not support IE playbackRate property.

grammar

Back playbackRate properties:

audioObject .playbackRate

Setting playbackRate properties:

audioObject .playbackRate= playbackspeed

Property Value

值

描述

playbackspeed

指示音频的当前播放速度。

例值：

1.0 正常速度
0.5 半速（更慢）
2.0 倍速（更快）
-1.0 向后，正常速度
-0.5 向后，半速

technical details

return value:	Numeric value indicating the current audio playback speed.
Defaults	1.0

More examples

Examples

Quick set up audio playback:

document.getElementById("myaudio").playbackRate = 2;

Audio Object Reference

Previous: HTML DOM Audio muted property

Next: HTML DOM Audio duration property