Run ❯
Get your
own
website
Result Size:
625 x 565
×
Change Orientation
Save Code
Change Theme, Dark/Light
Go to Spaces
<!DOCTYPE html> <html> <body> <h2>JavaScript is Case Sensitive</h2> <p>Try to change lastName to lastname.</p> <p id="demo"></p> <script> let lastname, lastName; lastName = "Doe"; lastname = "Peterson"; document.getElementById("demo").innerHTML = lastName; </script> </body> </html>