setData()无法赋值，为什么用wx:for页面不渲染？

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setData()无法赋值，为什么用wx:for页面不渲染？setData() cannot be assigned, why is the page not rendered with wx:for?

The array obtained by calling the function is assigned by SetData, and the page is rendered by Wx: for. However, the data found was not rendered. Initialization assignment: the console can print all the data, but it's also strange. However, only the data of the initial assignment can be displayed on the page, and there is no code for the new data obtained by calling the method

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