utils=>store.js封装

/**
 * 储存数据
 * Storage
 */
module.exports={
/**
 * 设置值
 * key:value,
 * {
 *    useName:{
 *      key:value,
 *      sex:'sss',
 *      ...
 *    }
 * }
 * 
 */
  setItem(key,value,module_name){
    if(module_name){
      let module_name_info=this.getItem(module_name)||{};
      module_name_info[key]=value;
      wx.setStorageSync(module_name, module_name_info)
    }else{
      wx.setStorageSync(key,value)
    }
  },
  getItem(key,module_name){
    if(module_name){
      let val=wx.getStorageSync(module_name);
      if(val) return val[key];
      return '';
    }else{
      return wx.getStorageSync(key)
    }
  },
  clear(key){
    key?wx.removeStorageSync(key):wx.removeStorageSync()
  },
  getSystemInfo(){
    return wx.getSystemInfoSync();
  }
}