pics+=res.data.words_result

          console.log(pics)

          if(pics==''){

            console.log(pics)

            that.setData({

            wordstext:false,

            faceend:true

            })

          }else{

            console.log(pics)

            that.setData({

            words:pics,// res.data.words_result,

            faceend:false,

            wordstext:true

            })

          } 

pics传给words不显示，但换成res.data.words_result则显示。