微信小程序 this.setData 修改对象属情值

page({

  data:{

        s1:{a:"",b:"b"}

    },

   changeData:function(e){

          var cData=this.data.s1;

          cData.a="1";//先修改json值

          this.setData({ //再set值

                s1:cData

         })

    }

})

转自https://www.cnblogs.com/panlaixing/p/6557940.html