innerAudioContext.onCanplay(() => {
	innerAudioContext.duration
	let getAudioTime = setInterval(() => {
		console.log('定时器获取duration', innerAudioContext.duration)
		if (innerAudioContext.duration !== 0) { // 里面有时间了
			let audioEndTime = Math.floor(innerAudioContext.duration)
			console.log('获取音频总时长为-------》', audioEndTime)
			clearInterval(getAudioTime)
		}
	}, 1000)
})