File. ReadAsDataURL (BLOB) is asynchronous? How to synchronize access to the file. The result?-CodePudding

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File. ReadAsDataURL (BLOB) is asynchronous? How to synchronize access to the file. The result?

Time：12-19

File. ReadAsDataURL (BLOB)
This method, which is asynchronous
?After reading, immediately call the File. The result can't take data
Great god, I want to sync

CodePudding user response:

Three dead is expensive to die

CodePudding user response:

Really is asynchronous, you can put it inside a settimeot try can be printed out

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