Allow the user to select multiple files:
document.getElementById("myEmail").multiple = true;
Click button to allow multiple files for the file upload button.
<!DOCTYPE html> <html> <body> <form action="/action_page.php"> Select files: <input type="file" id="myFile" name="files"> <input type="submit"> </form>// ww w. j a v a2 s .c o m <button onclick="myFunction()">Test</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>