小程序配置，通用域名配置文件

var host = ‘‘; //host替换成微信小程序认证的域名
 
var config = {
  service: {
    host,
    homeUrl: ,  //这里配置请求地址
  }
};
 
module.exports = config;

//app.js
var config = require("./config.js")
App({
  onLaunch: function () { 
    wx.setStorageSync("config", config)
    }
})

onReady: function () {
    var url =   wx.getStorageSync("config") 
    var that = this;
    wx.request({
      url: url.service.homeUrl, //仅为示例，并非真实的接口地址      
      header: {
        ‘content-type‘: ‘application/json‘ // 默认值
      },
      success(res) { 
        that.setData({
          "slider": res.data.slider,
          "cate_list":res.data.cate_list
        })
      }
    })
  }