Applying Client-side Validation

Apply Client-Side Validation to any Free Text question. This lets you enforce a specific Regular Expression (RegEx) pattern on any response given to that question. Because this validation occurs on the user's own machine, it does not rely on a server postback each time the user attempts to submit a potentially invalid response.

Implementation:

1. Switch to the Definition tab.
2. Select a Free Text question.
3. Right-click the selected question.
4. Click Attributes.
5. Add three Parameter attributes to the question, using the following details:

Parameter Name (Key)	Parameter Value
ClientSideValidation	1
Message	[Enter the text you want to display]
RegexPattern	[Enter the RegEx you want to use]

6. Click OK.