Does the default values I insert in the field disappear when you click the field?
Does the default values I insert in the field disappear when you click the field?
Not by default; however, it is easily achievable. Here is a walk-through:
http://www.gravityhelp.com/clearing-default-form-field-values-with-jquery/
How would you achieve this if you are using the placeholder add on which uses the class option already?
Looks like you have placeholders in your sidebar widget form already. What is it you're trying to do?
Are you already using this plugin? It was released after this topic was abandoned.
http://wordpress.org/extend/plugins/gravity-forms-placeholders/