test.html

<html>
<body>
<script src='./effect_chain_mixer.js'></script>
<script>
console.log("start");
var container = '{"audiofile":{"sources": {"filehttp://127.0.0.1:8000/royal.mp3": {"volume": 1.0}},"consumers": [],"effect":{"effect_id": "clip","timepoints": [{"timepoint": 0,"duration": 0,"change": {"offset": {"value": 0, "<type>": "<type>"},"trim": {"value": 0,"<type>": "<type>"},"duration": {"value": 180,"<type>": "<type>"},"mode": {"value": "normal","<type>":"<type>"}}}]}}}';
console.log("container:" + container);
var mixer = new EffectChainMixer(container);

mixer.init();
</script>

<a href="javascript:void(0)" onclick="mixer.play();">play</a><br>
<a href="javascript:void(0)" onclick="mixer.pause();">pause</a><br>
<a href="javascript:void(0)" onclick="mixer.stop();">stop</a><br>
<br><br>
<a href="javascript:void(0)" onclick="mixer.seek(mixer.times.songPos+10);">+10sec</a><br>
<a href="javascript:void(0)" onclick="mixer.seek(mixer.times.songPos-10);">-10sec</a><br>
<br><br>
<a href="javascript:void(0)" onclick="console.log(CONTEXT.currentTime);">time</a><br>

</body>
</html>