We can create an <input> element with type="file" via the document.createElement()
method:
var x = document.createElement("INPUT"); x.setAttribute("type", "file");
Click the button to create a File Upload Button.
<!DOCTYPE html> <html> <body> <button onclick="myFunction()">Test</button> <script> function myFunction() {/* www . j a v a 2 s. c o m*/ var x = document.createElement("INPUT"); x.setAttribute("type", "file"); document.body.appendChild(x); } </script> </body> </html>