1# JsFA 2 3### Introduction 4 5This sample describes how to develop a Feature Ability (FA) application with JavaScript. 6 7Different from the Hello World template, this sample app has a complex layout, styles, and logic. The actual effect is as follows: 8 9 10 11### Relevant concepts 12 13FA is used to show the page layout of an application. 14 15### Permission 16 17Don't involve. 18 19### Usage 20 21On the app page, you can select a food image by moving the focus to one of the circles of different colors. You can also add food to the cart. 22 23### Constraints 24 251.This sample can only be run on standard-system devices. 26 272.This sample requires DevEco Studio 3.0 Beta4 (Build Version: 3.0.0.992, built on July 14, 2022) to compile and run. 28
