https://developers.weixin.qq.com/s/oUMvdnmN7PM4
上面是代码片段，遇到的问题与下面的相同，但都未解决该问题
vant下datetime-picker,报formatter is not a function？? - 微信开放社区 https://developers.weixin.qq.com/community/develop/doc/000aca3255c5c05e048e3aa4556000
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你的方法写到 data 了应该是，写到正常methods wepy 应该是写到类上面就可以了
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