java script to validate decimal point

[Makhana Jiggu]

I need to validate a field to allow only decimal values
eg 10.2 or 10.0 or 10 is acceptable
It can have only 2 digits before the decimal point and can have only one digit after the decimal point. How can i check this.
Any sample code is helpful

[Eric Pascarello]

search for JavaScript regular expression with match and use this reg exp:

/\d{1,2}(.\d)?/

Eric