weapp_group/pages/user/user.js

// pages/user/user.js
import { navigateTo, getStorageSync, clearStorageSync, showModal } from '../../utils/util'

Page({

  /**
   * 页面的初始数据
   */
  data: {
    userInfo: null,
    hasUserInfo: false
  },

  /**
   * 生命周期函数--监听页面加载
   */
  onLoad: function (options) {

  },

  onShow: function () {
    const userInfo = getStorageSync('USERINFO')
    if (userInfo) {
      this.setData({
        userInfo,
        hasUserInfo: true
      })
    } else {
      this.setData({
        userInfo: null,
        hasUserInfo: false
      })
    }
  },

  onAboutTap: function () {
    navigateTo('/pages/about/about')
  },

  login: function () {
    navigateTo('/pages/login/login')
  },

  logout: function() {
    showModal({
      content: '确定退出登录',
      showCancel: true,
      cancelText: '取消',
      cancelColor: '#000000',
      confirmText: '确定',
      confirmColor: '#3CC51F',
      success: (result) => {
        if(result.confirm){
          clearStorageSync('USERINFO')
          this.setData({
            userInfo: null,
            hasUserInfo: false
          })
        }
      }
    })
  }

})