javascript validation for decimal numbers

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My problem is 18 digits before decimal point and 2 digits after decimal point should display in textbox.
using javascript

Posted 11-Sep-12 22:43pm

Updated 11-Sep-12 22:47pm

v2

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Espen Harlinn · Answer 1 · 2012-09-11T22:48:00

Posted 11-Sep-12 22:48pm

*Karthik Harve* · Answer 2 · 2012-09-11T22:53:00

Hi,

you can use the regular expression for match with exact scale and precision of the number entered in th textbox.

check these links.
checking for decimal numbers[^]
Simple regular expression for a decimal with a precision of 2?[^]
JavaScript Decimal Place Restriction With RegEx[^]

for more on regular expression refer below link.
http://www.regular-expressions.info/[^]

hope it helps.