AudioContext.currentTime - Web API 接口参考 编辑

currentTime是AudioContext的一个read-only属性，返回double秒（从0开始）表示一个只增不减的硬件时间戳，可以用来控制音频回放，实现可视化时间轴等等。

语法

var audioCtx = new AudioContext();
console.log(audioCtx.currentTime);

返回值

A double.

例子

注意：想要完整的Web Audio例子的话，可以去MDN Github repo看DEMO（例如panner-node）。不妨试试在浏览器控制台输入audioCtx.currentTime。

var AudioContext = window.AudioContext || window.webkitAudioContext;
var audioCtx = new AudioContext();
// Older webkit/blink browsers require a prefix

...

console.log(audioCtx.currentTime);

规范

Specification	Status	Comment
Web Audio API currentTime	Working Draft

浏览器兼容性

We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!

• Desktop
• Mobile

Feature	Chrome	Firefox (Gecko)	Internet Explorer	Opera	Safari (WebKit)
Basic support	10.0webkit	25.0 (25.0)	未实现	15.0webkit 22 (unprefixed)	6.0webkit

Feature	Android	Firefox Mobile (Gecko)	Firefox OS	IE Mobile	Opera Mobile	Safari Mobile	Chrome for Android
Basic support	?	26.0	1.2	?	?	?	33.0

另见

• Using the Web Audio API