On a Marketo form, is there a way for me to use the checkboxes field type, but limit the number of boxes someone can check? For example, I have a list of 10 checkbox options on a form field, but I don’t want people to select more than two. Is there a rule I can set up to make this possible?
Wow, that’s old! Still works but there’s a much later version without the old IE8 compatibility chaff:
This version lets you set min and max checked among a set of checkboxes, and even works across different Checkbox or Checkboxes fields. (That is, you can set a max of 2 sub-values in a multivalued field, or a max of 2 values in different fields, or any combo.)
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