1# JS-based Audio Playback and Management 2 3### Introduction 4 5This sample shows how to use the JS-based audio playback feature and set the volume. 6 7### Usage 8 91. Touch the **Play**, **Previous**, **Next**, and **Pause** buttons to try the corresponding functions. 10 112. Touch the **Volume** button to display the audio management screen. Drag the volume bar to adjust the volume. Touch **Close** to close the audio management screen. 12 13### Limitations 14 15This sample can only be run on standard-system devices. 16