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並前往https://stackoverflow.com/questions/53090699/how-to-run-an-alert-on-button-click-react-js

How to run an alert on button click React.js - Stack Overflow

Why don't you move the alert at the begining of handleUploadImage function? handleUploadImage(ev) { alert("Your file is being uploaded!") .

確定！ 回上一頁

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