Editar el código:
ver Resultados »
Inténtalo tú mismo - ©
w3ii.com
<!DOCTYPE html> <html> <body> First Name: <input type="text" id="myText" placeholder="Name"> <p>Click the button to display the placeholder text of the text field.</p> <button onclick="myFunction()">Try it</button> <p id="demo"></p> <script> function myFunction() { var x = document.getElementById("myText").placeholder; document.getElementById("demo").innerHTML = x; } </script> </body> </html>