# Directory structure

Weixin Mini Program contains anappthat describes the whole program and multiple that describe the respective pages. page`。

A Weixin Mini Program body consists of three files that must be placed in the root directory of the project, as follows:

file	essential	Effect
app.js	yes	Weixin Mini Program Logic
app.json	yes	Weixin Mini Program Public configuration
app.wxss	no	Weixin Mini Program Common Style Sheet

A Weixin Mini Program page consists of four files, which are:

File Type	essential	Effect
js	yes	Page Logic
wxml	yes	Page structure
json	no	Page configuration
wxss	no	Page Style Sheet

Note: To make it easier for developers to reduce configuration items, the four files describing the page must have the same path and file name.

# Files allowed to be uploaded

In the project directory, the following files are compiled so they cannot be directly accessible after uploading:.js, apagejson,.wxml, *.wxss (where the wxml and wxss files are only for pages configured in apagejson).In addition, only files with a whitelist suffix can be uploaded, and files that are not on the whitelist can be accessed in the development tool but cannot be uploaded. The specific white list is as follows:

wxs
png
jpg
jpeg
gif
svg
json
cer
mp3
aac
m4a
mp4
wav
ogg
silk
wasm
br
cert