小程序自定义tabbar出现的问题？

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小程序自定义tabbar出现的问题？What's wrong with the custom tabbar of the applet?

At present, I want to make a custom tabbar, similar to the app in ordinary mobile phones, with animation switching. Would you like to ask if the applet currently supports this? When clicking, the blue-green ball can scroll or slide to the tabbar

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