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Input FileUpload accept 属性
tryjsref_fileupload_accept2
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<!DOCTYPE html> <html> <body> Select a file to upload: <input type="file" id="myFile" size="50" accept="image/*"> <p>Click the button below to change the value of the accept attribute of the file upload button.</p> <button onclick="myFunction()">Change accepted file types</button> <p id="demo"></p> <script> function myFunction() { document.getElementById("myFile").accept = "audio/*"; document.getElementById("demo").innerHTML = "The accepted file types have been changed. Click ''Choose File'' to see the effect."; } </script> </body> </html>