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Callback interface to return the global data access
Time:05-06
Such as the first to the console. The log can print out the data, and the second display res undefined, that is why, is there any way to make it can access to even the global access to?
CodePudding user response:
Because your fetchUsers is an asynchronous method, return is a Promise, just like you use directly $. Ajax or axios, asynchronous method return values, outside can not directly use, of course you outside the print, method is to order with you, will not finish fetchUsers execution, such as
Since you use the asynchronous method, the data associated with the operation, put together bai, design is necessary, async and await, and then in. Then, will need to be exposed in the value assigned to an attribute of the current class
CodePudding user response:
Is usually defined in the global value of a variable to receive the res, so global can use this value