>[info] H.appId，获取应用的ID，String类型，支持双系统调用。
*****
#### 使用示例
```
var appId = H.appId;
```
- 序言简介
- 约定与规则
- 捐赠与外包
- 版本迭代
- 开始使用
- 属性
- appId
- appName
- appVersion
- systemType
- systemVersion
- version
- deviceId
- deviceToken
- deviceModel
- deviceName
- operator
- connectionType
- fullScreen
- screenWidth
- screenHeight
- winName
- winWidth
- winHeight
- frameName
- frameWidth
- frameHeight
- pageParam
- wgtParam
- appParam
- wgtRootDir
- fsDir
- cacheDir
- 事件
- batterylow
- batterystatus
- keyback
- keymenu
- volumeup
- volumedown
- offline
- online
- pause
- resume
- scrolltobottom
- shake
- swipedown
- swipeleft
- swiperight
- swipeup
- tap
- longpress
- viewappear
- viewdisappear
- noticeclicked
- appintent
- smartupdatefinish
- 方法
- v
- M
- trim
- getFileExt
- getAgeForBirthDay
- isNumber
- isPlusDecimal
- isDate
- getNowDateFormat
- transPHPTimestamp
- transJsTimestamp
- isObject
- cloneObj
- extendObj
- isFunction
- isArray
- newGUID
- unique
- addEventListener
- 常量
- 模板引擎
- 语法糖
- 建议收集