1,HTML source code£º <html> <head> <title>How to use DecimalFormat</title> </head> <body> <script src="jsjava.js"></script> <script> var nf=new DecimalFormat(); nf.applyPattern("000.000%"); var res=nf.format(-0.893566); document.write(res+"<br>"); nf.applyPattern("0000.00"); var res=nf.format(-53.385967); document.write(res+"<br>"); nf.applyPattern("0000.000E00"); var res=nf.format(53.385967); document.write(res+"<br>"); </script> </body> </html> 2,The display:

-89.357%
-53.39
5338.597e-2