Convert $4.58 from text box into Decimal

[culam]

I have a webapp that allows user to enter amount in the
textbox then insert or update into SQL Server database as
decimal(13,4). I can update other fields OK, except this
currency field.
Is there a function I can convert $4.58 from text box into
decimal.

Thanks,
Lam

 

[Don Grover]

Try

? formatNumber("$23.56")
23.56