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並前往https://developpaper.com/question/the-front-end-sends-an-empty-array-to-the-back-end-with-ajax-but-the-back-end-cant-get-the-empty-array/

The front end sends an empty array to the back end with Ajax ...

Data is an object array, and the objects contained in the group number have two keys: role_ ... I wonder, can't jqeury's Ajax function pass an empty array?

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