微信小程序中修改数据(页面数据和数组数据)的代码实现

 let pages = getCurrentPages();//当前页面    let prevPage = pages[pages.length - 2];//上一页面    prevPage.setData({//直接给上移页面赋值      selAddress: true    });

数组部分：comdata[{xhid:8,title:啦啦啦,read_num:100,share_num:20},{xhid:9,title:嘻嘻嘻,read_num:24,share_num:4},{xhid:20,title:嘻嘻嘻2,read_num:11,share_num:4},{xhid:27,title:嗯嗯嗯12,read_num	:8,share_num:4},{xhid:23,title:阿萨飒飒2,read_num:41,share_num:7}]代码如下：var index=0;var up = "comdata[" + index + "].share_num";          var newp = ++that.data[0].share_num;        that.setData({            [up]:newp})

A页面传给B页面share_num和当前的index在B页面onload赋给 that.setData({      item_index:options.index,      share_num:options.share_num    })然后修改代码： let pages = getCurrentPages();//当前页面          let prevPage = pages[pages.length - 2];//上一页面          var index = that.data.item_index;          var up = "comdata[" + index + "].share_num";          var newp = ++that.data.share_num;          prevPage.setData({//直接给上移页面赋值            [up]: newp          });