Dynamic Default Question Values
SurveyJS Form Library allows you to specify default question values. Questions use them until proper values are specified by a user or programmatically. If the proper values are never specified, default values are saved in survey results. Read more...
SurveyJS Form Library allows you to specify default question values. Questions use them until proper values are specified by a user or programmatically. If the proper values are never specified, default values are saved in survey results.
You can specify static default values or calculate default values dynamically. To specify a static default question value, assign it to the question's defaultValue
property.
To calculate a default question value dynamically, assign a logical expression to the question's defaultValueExpression
property as shown in this demo. This expression will be evaluated for the first time when the survey begins, and then re-evaluated again each time any question value changes. Your expression can include the following dynamic elements:
Follow the links above for information on how to use these elements to specify dynamic default question values.