[英]How do I get total number of columns received in RestAPI response?
您可以簡單地訪問數組上的.length
屬性
value={data?.body?.marketState?.length}
有關.length
的更多信息:
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/length
有關 JavaScript arrays 的更多信息:
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array
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