说出来你们可能不信，小程序里splice失效，我折腾了会发现这要我这个变量 concat 过了基本splice就没问题。我也不知道什么原因       that.setData({         Photos:r.data?that.data.Photos.concat(r.data):[],         PostPhotos:r.data?that.data.PostPhotos.concat(r.data):[],       })         var Photos= that.data.Photos         var PostPhotos=  that.data.PostPhotos        Photos.splice(index, 1);        PostPhotos.splice(index, 1);          that.setData({            Photos: Photos,            PostPhotos:PostPhotos          });