AudioContext.currentTime

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