Run ❯
×
Change Orientation
Save Code
Change Theme, Dark/Light
Go to Spaces
<!DOCTYPE html> <html> <body> <h1>JavaScript Errors</h1> <h2>The TypeError</h2> <p>You cannot convert a number to upper case:</p> <p id="demo"></p> <script> let num = 1; try { num.toUpperCase(); } catch(err) { document.getElementById("demo").innerHTML = err.name; } </script> </body> </html>
