昨天小程序的运维中心刚上线，今天迫不及待的来看看线上版本有哪些错误，打开“运维中心” - “错误查询”，都是和下面类似的错误。

请问是程序写法的问题么？谢谢

undefined is not a function (evaluating ‘wx.showLoading’);App catch error in mShowLoading function

undefined is not a function (evaluating ‘wx.hideLoading()’);App catch error in mHideLoading function

undefined is not a function (evaluating ‘wx.addPhoneContact’);at api showModal success callback function

undefined is not a function (evaluating ‘wx.showLoading’);App catch error in mShowLoading function

源程序：

  mShowLoading: function (text) {

    var that = this

    if(text == ‘’){

      text = “正在加载数据”

    }

    if (!this.showLoading){

      wx.showLoading({

        title: text,

        mask: true,

        success:function(res){

          that.showLoading = true

        }

      })

    }

  },

  mHideLoading: function () {

    wx.hideLoading();

    this.showLoading = false

  },