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Input FileUpload disabled 属性
tryjsref_fileupload_disabled
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<!DOCTYPE html> <html> <body> Get file: <input type="file" id="myFile" disabled> <p>Click the button below to find out if the File Upload button above is disabled.</p> <button onclick="myFunction()">Try it</button> <p id="demo"></p> <script> function myFunction() { var x = document.getElementById("myFile").disabled; document.getElementById("demo").innerHTML = x; } </script> </body> </html>