Only digits (0-9) can be put inside [] in the path string: daijiaoList[${index}].number_小寒风的

单独修改某一项的值的时候出现这样的错误 代码是这样的

 var up = "daijiaoList[${index}].number"

 this.setData({
   [up]:10
 }) var up = "daijiao