微信小程序开发时碰到问题了，求解！！！

Now you can provide attr “wx:key” for a “wx:for” to improve performance.Now you can provide attr “wx:key” for a “wx:for” to improve performance.Now you can provide attr “wx:key” for a “wx:for” to improve performance.Now you can provide attr “wx:key” for a “wx:for” to improve performance.Now you can provide attr “wx:key” for a “wx:for” to improve performance.Now you can provide attr “wx:key” for a “wx:for” to improve performance.