Question

I have couple of text boxes. In those text boxes I need to check few types.

1. Allow only Numbers and Decimals

Example: 123.2323 //not allowed any characters

2. Allow only 2 numbers after decimal

Example: 123.23 //not allowed any characters and only allowed 2 digits after decimal

3. Allow only 1 number after decimal

Example: 123.2 //not allowed any characters and only allowed 1 digits after decimal

I have to check these validation in OnKeyPress event in text boxes.

If possible need all three methods.

Please help me on this.

Answer 1

Regular expressions and Quirksmode.org are your friends here.

Also, something like jQuery might help with validation.