W3School TIY Editor
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<!DOCTYPE html> <html> <body> 获取图像：<input type="file" id="myFile"> <br> <button onclick="disableBtn()">禁用文件上传</button> <button onclick="undisableBtn()">取消禁用文件上传</button> <script> function disableBtn() { document.getElementById("myFile").disabled = true; } function undisableBtn() { document.getElementById("myFile").disabled = false; } </script> </body> </html>