The applet returns to the previous page onshow to receive parameters

Current page reception

  onShow: function (options) {
    
    
    let pages = getCurrentPages()
    var curPage = pages[pages.length - 1]; // 当前页面
    console.log(curPage.data.suibian)
  },

Return to the previous page with parameters

    var pages = getCurrentPages(); // 获取页面栈
    var prevPage = pages[pages.length - 2]; // 上一个页面
    prevPage.setData({
    
    
      suibian: {
    
    a:1, b:2} // 假数据
    })