1,HTML source code£º <html> <head> <title>How to use Byte</title> </head> <body> <script src="jsjava.js"></script> <script> try{ var b=Byte.parseByte("10d3"); document.write(b); }catch(e){ alert(e.message); } </script> </body> </html> 2,The display:

The browser will open a warning window and hint:"Not a number Exception!".