h5下audio取消监听事件错误

[2460392754]

问题描述
h5下audio取消监听事件错误
例如：audio.offTimeUpdate();
控制台错误: audio.offTimeUpdate is not a function

系统信息:

• 发行平台: H5
• 操作系统 window
• HBuilderX: 1.9.8.20190518

code

<template>
	<view class="content">
	</view>
</template>

<script>
import $request from '../../utils/axios.js';

export default {
	methods: {
		$_audioInit() {
			const audio = uni.createInnerAudioContext();

			audio.src = 'http://m10.music.126.net/20190519162600/07adbd9d2e4cdd24d695805c7ace0df7/ymusic/8f13/217b/f5e9/c8a4cf0af1ee87c6572ae1a3167906dc.mp3';
			audio.onCanplay(function() {
				console.log('audio onCanplay');
				audio.play();
			});

			audio.onTimeUpdate(function() {
				console.log('audio onTimeUpdate');
			});

			setTimeout(() => {
				try {
					audio.offTimeUpdate();
					console.log('audio offTimeUpdate');
				} catch (e) {
					console.error('Error audio offTimeUpdate: ' + e);
				}
			}, 2000);
		}
	},

	created() {
		this.$_audioInit();
	}
};
</script>