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<html><body><form action="/action_page.php"> Select files: <input type="file" id="myFile" name="files"> <input type="submit"></form><p>Click the "Try it" button to allow multiple values (files) for the file upload button.</p><p>Try selecting more than one file when browsing for files before and after you have clicked on the "Try it" button. <strong>Tip:</strong> hold down CTRL or the SHIFT key while select, to select multiple files.</p><button onclick="myFunction()">Try it</button><p id="demo"></p><script>function myFunction() { document.getElementById("myFile").multiple = true; document.getElementById("demo").innerHTML = "The file upload button now accept multiple values.";}</script></body></html>