1# JS Components 2 3### Introduction 4 5This sample shows how to use components to develop a GUI. Components are at the core of page building. Each component implements independent visible and interactive functional units by encapsulating data and methods. 6 7### Usage 8 9On the home screen of the sample app, you can scroll through the component list and touch each component to view their effect and interaction. You can use and reuse any component anywhere as needed. 10 11### Constraints 12 13This sample can only be run on standard-system devices. 14