// app.js
App({
  globalData:{
		screenWidth:375,
		screenHeight:667,
		statusHeight:20,
		contentHeight:500
	},
	onLaunch(){
		// 1.获取设备的信息
		wx.getSystemInfo({
      success:(res)=>{
				this.globalData.screenWidth = res.screenWidth
				this.globalData.screenHeight = res.screenHeight
				this.globalData.statusHeight = res.statusBarHeight
				this.globalData.contentHeight = res.screenHeight - res.statusBarHeight - 44
				console.log(res);
      }
    })
	}
})