js--回调写法

export function getSellerInfo(dealerId, fun) {
    wx.request({
        url: domain + ‘/app/dealerAndClient.action‘,
        data: {
            ‘dealerId‘: dealerId
        },
        success: function (res) {
            res = res.data;

            if (res.status === connectionOK) {
                getFirmingStatus(dealerId, function (parm) {
                    let firmingStatus = parm;
                    fun(res.object, firmingStatus);
                });
            }
        }
    })

}

getSellerInfo(dealerID, function (dealinfo, firmingstatus) {
    __this.setData({
        dealInfo: dealinfo,
        firmingStatus: firmingstatus
    });

});