API函数（）用于监听网络状态变化事件
A.wx.getNetworkType(Object object)
B.wx.onNetworkStatusChange(function callback)
C.wx.getConnectedWifi(Object object)
D.wx.onWifiConnected(function callback)
正确答案：B
API函数（）用于监听网络状态变化事件
A.wx.getNetworkType(Object object)
B.wx.onNetworkStatusChange(function callback)
C.wx.getConnectedWifi(Object object)
D.wx.onWifiConnected(function callback)
正确答案：B